In NY, gas stations used to have 2 prices for gas, one with cash and one with credit.  I do not know if they still do.

Yesterday at HEB, I paid .88 for some Ibprofen and will get .10 cashback from my CU for using my debit card as a credit card.  How can they (both) expect to make any money on that?  Also gold and silver sellers like APMEX charge extra for using a CC.