I have been using Flying J for 15 years as dedicated as I can be . On my last trip 5000 miles I had to use whatever diesel stations available .they were cheaper ,faster ,They would just turn the pump ...
Its usually the people in TT or 5'ers that say they go to regular gas stations and get better prices. Try doing that with a large DP with a toad. Your toad will be out in the road while you get gas or fuel. Then pray that you don't have to backup to get out.