And if you don't pay attention, you'll pay even more at chain stores for the same item depending on what aisle youre on.
Check it: at walmart, we found a brand of paper towels for $1 a roll; or you could buy a bundle of six for like $6.65. WTF? Another time we found a type of salsa that seems to be very popular with immigrants from a southern land at a grocery store. It was like 30 cents more in the "latin foods" section than it was in the "Tex-Mex" area.