Message I received regarding posting dual prices for cash and credit card:
Message Posted: Oct 19, 2012 6:39:43 PM
When reporting prices for stations in areas that have different prices based on method of payment, we ask that you post the cash price where it exists. If the station does not offer a cash price, the standard price should be reported.
The Comments field may be used to include a note about cash/credit prices, but this is not required.
Information entered in the Comments field will be shown on the station details page, below the prices.