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chore: clarify relationship between B and gasEstimateForL1 #2644

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chore: clarify relationship between B and gasEstimateForL1 #2644

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2 changes: 2 additions & 0 deletions docs/build-decentralized-apps/02-how-to-estimate-gas.mdx
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Expand Up @@ -68,6 +68,8 @@ TXFEES = P * (L2G + ((L1P * L1S) / P))

We'll use one resource available in Arbitrum: the [`NodeInterface`](/build-decentralized-apps/nodeinterface/02-reference.mdx).

- B (Extra Buffer) ⇒ The extra buffer is the amount of gas required for posting the transaction on L1, priced in L2 gas.
- Call `NodeInterface.GasEstimateComponents()` and get the second element, `baseFee`.
- P (L2 Gas Price) ⇒ Price to pay for each gas unit. It starts at @@arbOneGasFloorGwei=0.01@@ gwei on Arbitrum One (@@novaGasFloorGwei=0.01@@ gwei on Arbitrum Nova) and can increase depending on the demand for network resources.
- Call `NodeInterface.GasEstimateComponents()` and get the third element, `baseFee`.
- L2G (Gas used on L2) ⇒ Gas used to compute the transaction on the child chain. This does not include the _“posting on L1”_ part of the calculations. The value of L2G will depend on the transaction itself, but having the data of the transaction, we can calculate it as follows:
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