I’m always happy when I see affordable fuel, Costco might just do it best. Clean Pumps (wiped down often), clean staff, had Auto-Diesel, lot was immaculate, pumps always give receipts but if they ever mess up the staff will come and give you one from their office and fix the pump on the spot.
Costco always has the lowest gas in the area. Sometimes we don't get the best gas mileage using their gas, but typically it's comparable. The location is very easy to get in and out of and plenty of room for everybody. You're not squished into a little location.
Super friendly and helpful attendant named Jeff helped an older lady infront of me who was having trouble with her Costco and/or payment card, he was very patient...I thought it was really cool and wanted to share.