diff --git a/src/contracts/factories/NFTFactory.ts b/src/contracts/factories/NFTFactory.ts
index 615ba1f6..89195b1e 100644
--- a/src/contracts/factories/NFTFactory.ts
+++ b/src/contracts/factories/NFTFactory.ts
@@ -69,6 +69,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.deployERC721Contract,
       nftData.name,
       nftData.symbol,
@@ -194,6 +195,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.add721TokenTemplate,
       templateAddress
     )
@@ -232,6 +234,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.disable721TokenTemplate,
       templateIndex
     )
@@ -272,6 +275,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.reactivate721TokenTemplate,
       templateIndex
     )
@@ -308,6 +312,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.addTokenTemplate,
       templateAddress
     )
@@ -350,6 +355,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.disableTokenTemplate,
       templateIndex
     )
@@ -393,6 +399,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.reactivateTokenTemplate,
       templateIndex
     )
@@ -432,6 +439,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.startMultipleTokenOrder,
       orders
     )
@@ -468,6 +476,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.createNftWithErc20,
       nftCreateData,
       ercCreateData
@@ -509,6 +518,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.createNftWithErc20WithPool,
       nftCreateData,
       ercCreateData,
@@ -551,6 +561,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.createNftWithErc20WithFixedRate,
       nftCreateData,
       ercCreateData,
@@ -595,6 +606,7 @@ export class NftFactory extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.createNftWithErc20WithDispenser,
       nftCreateData,
       ercCreateData,
diff --git a/src/contracts/pools/Dispenser.ts b/src/contracts/pools/Dispenser.ts
index c9c2382e..61632fc7 100644
--- a/src/contracts/pools/Dispenser.ts
+++ b/src/contracts/pools/Dispenser.ts
@@ -59,6 +59,7 @@ export class Dispenser extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.create,
       dtAddress,
       this.web3.utils.toWei(maxTokens),
@@ -98,6 +99,7 @@ export class Dispenser extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.activate,
       dtAddress,
       this.web3.utils.toWei(maxTokens),
@@ -129,6 +131,7 @@ export class Dispenser extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.deactivate,
       dtAddress
     )
@@ -160,6 +163,7 @@ export class Dispenser extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.setAllowedSwapper,
       dtAddress,
       newAllowedSwapper
@@ -197,6 +201,7 @@ export class Dispenser extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.dispense,
       dtAddress,
       this.web3.utils.toWei(amount),
@@ -228,6 +233,7 @@ export class Dispenser extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.ownerWithdraw,
       dtAddress
     )
diff --git a/src/contracts/pools/FixedRateExchange.ts b/src/contracts/pools/FixedRateExchange.ts
index 7617e66b..1b517340 100644
--- a/src/contracts/pools/FixedRateExchange.ts
+++ b/src/contracts/pools/FixedRateExchange.ts
@@ -70,6 +70,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.buyDT,
       exchangeId,
       dtAmountFormatted,
@@ -127,6 +128,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.sellDT,
       exchangeId,
       dtAmountFormatted,
@@ -173,6 +175,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.setRate,
       exchangeId,
       this.web3.utils.toWei(newRate)
@@ -206,6 +209,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.setAllowedSwapper,
       exchangeId,
       newAllowedSwapper
@@ -238,6 +242,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.toggleExchangeState,
       exchangeId
     )
@@ -270,6 +275,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.toggleExchangeState,
       exchangeId
     )
@@ -504,6 +510,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.toggleMintState,
       exchangeId,
       true
@@ -538,6 +545,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.toggleMintState,
       exchangeId,
       false
@@ -582,6 +590,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.collectBT,
       exchangeId,
       amountWei
@@ -626,6 +635,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.collectDT,
       exchangeId,
       amountWei
@@ -658,6 +668,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.collectMarketFee,
       exchangeId
     )
@@ -690,6 +701,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.collectOceanFee,
       exchangeId
     )
@@ -750,6 +762,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.updateMarketFee,
       exchangeId,
       this.web3.utils.toWei(newMarketFee)
@@ -783,6 +796,7 @@ export class FixedRateExchange extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.updateMarketFeeCollector,
       exchangeId,
       newMarketFeeCollector
diff --git a/src/contracts/pools/Router.ts b/src/contracts/pools/Router.ts
index ea0763b9..d8eaafea 100644
--- a/src/contracts/pools/Router.ts
+++ b/src/contracts/pools/Router.ts
@@ -35,6 +35,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.buyDTBatch,
       operations
     )
@@ -110,6 +111,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.addApprovedToken,
       tokenAddress
     )
@@ -143,6 +145,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.removeApprovedToken,
       tokenAddress
     )
@@ -175,6 +178,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.addSSContract,
       tokenAddress
     )
@@ -207,6 +211,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.removeSSContract,
       tokenAddress
     )
@@ -239,6 +244,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.addFixedRateContract,
       tokenAddress
     )
@@ -272,6 +278,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.removeFixedRateContract,
       tokenAddress
     )
@@ -305,6 +312,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.addDispenserContract,
       tokenAddress
     )
@@ -337,6 +345,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.removeDispenserContract,
       tokenAddress
     )
@@ -392,6 +401,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.updateOPCFee,
       newSwapOceanFee,
       newSwapNonOceanFee,
@@ -428,6 +438,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.addPoolTemplate,
       templateAddress
     )
@@ -461,6 +472,7 @@ export class Router extends SmartContractWithAddress {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       this.contract.methods.removePoolTemplate,
       templateAddress
     )
diff --git a/src/contracts/tokens/Datatoken.ts b/src/contracts/tokens/Datatoken.ts
index 23803813..ff848248 100644
--- a/src/contracts/tokens/Datatoken.ts
+++ b/src/contracts/tokens/Datatoken.ts
@@ -73,6 +73,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.approve,
       spender,
       this.web3.utils.toWei(amount)
@@ -128,6 +129,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.createFixedRate,
       fixedRateParams.fixedRateAddress,
       [
@@ -189,6 +191,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.createDispenser,
       dispenserAddress,
       dispenserParams.maxTokens,
@@ -275,6 +278,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.addMinter,
       minter
     )
@@ -314,6 +318,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.removeMinter,
       minter
     )
@@ -352,6 +357,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.addPaymentManager,
       paymentManager
     )
@@ -390,6 +396,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.removePaymentManager,
       paymentManager
     )
@@ -435,6 +442,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.setPaymentCollector,
       paymentCollector
     )
@@ -498,6 +506,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.transfer,
       toAddress,
       amount
@@ -546,6 +555,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.startOrder,
       consumer,
       serviceIndex,
@@ -585,6 +595,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.reuseOrder,
       orderTxId,
       providerFees
@@ -622,6 +633,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.buyFromFreAndOrder,
       orderParams,
       freContractParams
@@ -657,6 +669,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.buyFromDispenserAndOrder,
       orderParams,
       dispenserContract
@@ -691,6 +704,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.setData,
       value
     )
@@ -725,6 +739,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.cleanPermissions
     )
 
@@ -834,6 +849,7 @@ export class Datatoken extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       dtContract.methods.setPublishingMarketFee,
       publishMarketFeeAddress,
       publishMarketFeeToken,
diff --git a/src/contracts/tokens/NFT.ts b/src/contracts/tokens/NFT.ts
index 203905e9..b5fbee88 100644
--- a/src/contracts/tokens/NFT.ts
+++ b/src/contracts/tokens/NFT.ts
@@ -67,6 +67,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.createERC20,
       templateIndex,
       [name, symbol],
@@ -108,6 +109,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.addManager,
       manager
     )
@@ -145,6 +147,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.removeManager,
       manager
     )
@@ -183,6 +186,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.addToCreateERC20List,
       datatokenDeployer
     )
@@ -223,6 +227,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.removeFromCreateERC20List,
       datatokenDeployer
     )
@@ -260,6 +265,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.addToMetadataList,
       metadataUpdater
     )
@@ -300,6 +306,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.removeFromMetadataList,
       metadataUpdater
     )
@@ -336,6 +343,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.addTo725StoreList,
       storeUpdater
     )
@@ -377,6 +385,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.removeFrom725StoreList,
       storeUpdater
     )
@@ -414,6 +423,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.cleanPermissions
     )
 
@@ -457,6 +467,7 @@ export class Nft extends SmartContract {
       nftOwner,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.transferFrom,
       nftOwner,
       nftReceiver,
@@ -503,6 +514,7 @@ export class Nft extends SmartContract {
       nftOwner,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.safeTransferFrom,
       nftOwner,
       nftReceiver,
@@ -553,6 +565,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.setMetaData,
       metadataState,
       metadataDecryptorUrl,
@@ -598,6 +611,7 @@ export class Nft extends SmartContract {
       metadataUpdater,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.setMetaDataAndTokenURI,
       sanitizedMetadataAndTokenURI
     )
@@ -635,6 +649,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.setMetaDataState,
       metadataState
     )
@@ -667,6 +682,7 @@ export class Nft extends SmartContract {
       address,
       estGas + 1,
       this.web3,
+      this.config,
       nftContract.methods.setTokenURI,
       '1',
       data
diff --git a/src/utils/ContractUtils.ts b/src/utils/ContractUtils.ts
index db769466..9e4e7f39 100644
--- a/src/utils/ContractUtils.ts
+++ b/src/utils/ContractUtils.ts
@@ -109,6 +109,7 @@ export async function sendTx(
   from: string,
   estGas: any,
   web3: Web3,
+  config: Config,
   functionToSend: Function,
   ...args: any[]
 ): Promise<any> {
@@ -128,7 +129,7 @@ export async function sendTx(
       .toString(10)
   } catch (err) {
     LoggerInstance.log('EIP 1559 not supported by network')
-    sendTxValue.gasPrice = await this.getFairGasPrice()
+    sendTxValue.gasPrice = await getFairGasPrice(web3, config)
   }
 
   const trxReceipt = await functionToSend.apply(null, args).send(sendTxValue)