Ideally the list price should include all expected costs. So a menu item should have taxes and the expected 20% or whatever tip (and any other fees) built in.

Ideally the list price should include all expected costs. So a menu item should have taxes and the expected 20% or whatever tip (and any other fees) built in. Then the receipt can break things out and charge less per line item + add in total tax and fees and leave space for a tip (with the default applied unless you choose differently). Likewise with AirBnB: when browsing for specific dates either show the total cost or the amortized per night cost, inclusive of all fees.