REWahoo
Give me a museum and I'll fill it. (Picasso) Give
Costco charges $0.40 per gal less for regular and $0.50 less for premium vs the next less expensive gasoline in this area.
That's a huge price variation.
I looked at GasBuddy locally and the Costco price for regular is about $0.10 to $0.15 less than surrounding stations, but many stations in the area are within a penny or two of their price.