Right or wrong, that was basically the norm in the US through the 80s and 90s. The item was listed at $10 and you paid $10 plus local sales tax on top. No CC fees. Sometimes you’d see cash discounts (Visa rules at the time prohibited the inverse).
Nah, 'cash price/credit price' was the norm through 1985 when CA passed it's anti-credit price legislation. Then all prices rose to meet the credit-price. Reversed in 2018 by a Federal Court.