Hmm.. Vance, do you have a link for this? That doesn't feel right to me? Some stations do offer a cash discount, but the stated price should generally always be the credit card price (or only price if nothing else is stated). The fee charged by the card companies (not just for gas) is paid by the merchant.
It is generally a violation of their merchant agreement to "pass on" the fee. They *can* offer a cash discount (again, not just gas), but the credit card price would be the same as debit/check or any other form but cash.
If stations are charging more than their stated price, credit card or no credit card, that certainly would be a crime, regardless of how you pay! I'd be curious to see the video you mention. I'm not clear how they'd be doing this since all the pumps I've used clearly show and lock the price at the pump before you begin pumping.
Nicki