I get the impression that Costco here prices their gas based on the latest delivery. What I mean is that the don't play games raising and lowering the prices multiple times a day like typical gas stations do. They pay a price and the price stays until their next delivery. So...in a climate of falling prices, it's best to know what other stations are getting or you can pay more at Costco. There is a Meijer's down the street from Costco that is often cheaper.
Costco, like most volume retailers, get their fuel based on spot price... it may come from XYZ in the morning and ABC that afternoon... based on what the price does. Costco, WalMart, Kroger... all of those 'store brands' are called 'unbranded' gas... that is to say it's not advertised as Shell, BP or whatnot, even though it very well may be. The difference between Shell gas from a Shell station, and Shell gas unbranded at Costco is the additive package (in most cases.) It all comes from the same storage tank at the loading terminal, the additive is injected into the fuel at the time of loading.
The big volume retailers have one thing going for them, however... maintenance. Water levels in underground storage tanks are monitored constantly and will be pumped out at as low as 1" sometimes... you might as well forget that at some 'mom & Pop' station. They maintain the pumps and actually change the filters on a scheduled basis. They also usually get deliveries in whole units... i.e. an entire load of regular NL, or an entire load of Premium NL... much less chance of a cross-drop or something silly like that.
All gas comes from one Central location within your area.
Yes and no. NJ gas may come from as far away as Richmond, VA, Wilmington, DE or Baltimore... depending on the price. It sounds stupid, but if they think they can save $40 on a truckload of fuel, they'll do it.
Where do I buy my gas? Preferrably at Chevron. When I wind up buying no-name fuel (down here in TX it's QT or Racetrac, among others) I buy the premium.
I get the impression that Costco here prices their gas based on the latest delivery. What I mean is that the don't play games raising and lowering the prices multiple times a day like typical gas stations do. They pay a price and the price stays until their next delivery.
Yes and no. There are Costcos around here that get 3-5 loads of fuel (9000gal each delivery)
per DAY. Damned right they change their prices...