Interestingly, in 2013 both credit card minimums (up to a maximum of $10) and surcharges (up to a maximum of 4%) became legally federally, although there are 10 states that still prohibit surcharges (including New York, California, and Texas).

So seems like $0.35 is allowable on any transaction of $8.75 or more.

[1] https://www.thebalance.com/credit-card-surcharges-315423

What is the difference between a "discount for cash payers" and "convenience fee for card users", when the only two options are cash and card? In both scenarios, price for purchasing with cash is less than price for purchasing with card. Seems like semantics to me.

I've started seeing this trend in a lot of small shops here in NYC as well. There used to be a ton of "cash only" places, but now I'm seeing more places that I would expect to be cash only accepting credit cards with a "convenience fee."

I thought it was illegal but I may have been wrong.