What it means
Units and price
Gas measures work, while a gas price expresses the cost per unit. On Ethereum, the charged execution fee depends on gas used and applicable fee components. A transaction’s limit or maximum price is not necessarily the final amount charged.
What customers pay
The application should separate network execution costs from gateway charges, exchange spreads and withdrawal fees. Layer 2 systems may have additional data-related fee components. Sponsorship can change who pays without eliminating the underlying expense. Quotes can change as network conditions and transaction complexity change.
Related concepts
In practice
A concrete example
A token checkout shows a network-fee estimate separately from the order amount and the payment service’s own fee.
Technical notes & boundaries
A failed execution can still consume paid gas. Fee calculations must identify the chain and transaction type rather than applying one formula to every network.
Go to the source.
Original references used for this definition. Product details and standards can change.