Looks like mostly low-end. One of our local supermarkets (Raley's; actually it's regional) has a bike section with that same kind of stuff. Only thing I've bought there is tire levers when I forgot mine.
1980 Schwinn World Sport, 1982 Schwinn Super Le Tour, 1984 (?) Univega Single Speed/Fixed conversion, Kogswell G58 fixed gear, 1987 Schwinn Super Sport
If I need a pair of stainless water bottle mount screws, I can get them from a QBP shop online for $.69 each plus shipping but I have to buy 10 of them. Or, I can go to the closest LBS (25mi. one way) and pay about the same each, less shipping. Or, I can go to the local ACE and buy two of the same thing for $.38. They also carry some low end kids bikes, tires and tubes. If you desperately need a tube on Sunday afternoon, they're there for you.