In Ethereum transaction has a gas_price and miners include transactions with the higher gas_price first. How block producers prioritize transactions in Near?
In Near gas price is global for the entire system. Chunk producers might have incentives to include transactions with higher fee since they also get paid with certain percentage of the fee back, but also fees are supposed to reflect actual cost of the corresponding operation. So at the end if our fee model is perfect chunk producers should be indifferent to what transactions they include as long as their cumulative fee adds up to the max gas in the block.