“No retailer…may impose a surcharge on a cardholder who elects to use a credit card in lieu of payment by cash, check or similar means…”
Statute: Cal. Civ. Code § 1748.1(a) (West)
they just jack the price up for payment by credit card, like gas stations...it's 10 to 15 cents more per gallon for gas if you pay by credit card than if you pay by cash, call it by whatever name, there is still a surcharge.