Since most people pay with cards these days [citation needed], it seems like it would go over much better if the 3% processing cost were built into the normal p

Since most people pay with cards these days [citation needed], it seems like it would go over much better if the 3% processing cost were built into the normal price, and then you offered a 3% discount (or 2.91% for you pedants out there) for people paying in cash. The card users don't feel like they're being nickel-and-dimed, and the cash users feel like they're being treated specially.