A fee for a specific service (ie using a card vs using cash) is pretty different from unavoidable junk fees. As long as a fee like that is advertised up-front i

A fee for a specific service (ie using a card vs using cash) is pretty different from unavoidable junk fees. As long as a fee like that is advertised up-front it's totally fine; but fees that everybody has to pay are a qualitatively different thing because they are just a way to get a misleadingly low sticker price for the product.