TRON bandwidth cost 3

https://mag-wiki.win/index.php/Understanding_TRON_Bandwidth_Cost_and_How_to_Manage_Smart_Contract_Resources

TRON bandwidth cost refers to the fee paid to the TRON network for processing transactions, which is calculated based on the data size of the operation. Unlike Ethereum's gas system, TRON uses a simpler bandwidth model where users allocate a fixed amount of bandwidth upfront to cover transaction costs. This means that if you don't use all the bandwidth you reserved, you lose it—making it a bit tricky for developers to optimize their dApps without overpaying.