I often do the same. They need to hear it. We can let them hear it with no cost. Will do it even more when Block pushes their BTC by square terminal update. With that as an option for them, I am likely to add the, “ah, shucks. I don’t have fiat right now. I’ll come back by though.” And let them feel it leave the store. As long as I can do it constructively. Found a link to find Square Terminal users locally. (See my feed if curious)