I go there a lot. When I was still in the TV repair business in the 90s, I used to go there to buy brand-new TV sets for parts sometimes... Cheaper than I could order the parts from the mfr! I buy all of our household stuff there, and things like motor oil, car batteries (BEST return/warranty on car batteries of any store I know of). I do buy some food and drinking water there, but since it's only my wife and me at home, I can't really take advantage of buying 10 lbs of fresh meat or a 22" diameter pie.
A month ago, they had a deal on brand-name Muscle Milk 4 lbs for $30 (reg price $37 at Costco, and I think $40 online + shipping). That's the cheapest I've ever seen it, and they have an even bigger quantity of off-brand whey powder for about $18.
Gasoline: Not such a good deal when you save a dime per gallon, and you waste 20 minutes and waste a half gallon idling in line.
Charles