As per Gas Buddy policy-

The only time you should post the cash price as the primary price is if the station does not accept any plastic at all. Since we're seemingly moving to a cashless society, we ask that you post the credit or non-discounted/non-cash price as primary. Feel free to list the discounted price or cash price... but as a comment, as you're allowed. Only credit or "once price" goes in the price posting fields.

Thanks for posting!