How much does SushiSwap arbitrum charge?

Excuse me, could you please elaborate on the fees charged by SushiSwap Arbitrum? I'm interested in understanding the specifics of their pricing model, such as whether they have a flat fee or if the charges vary based on transaction size or other factors. It would be helpful to know if there are any hidden costs or additional fees that users should be aware of when using the platform. Additionally, is there a way to estimate the potential fees before executing a trade or transaction? Thank you for your assistance.