But quality is not a consideration sometimes. I was at HD recently and noticed a chap with about ten sponge brushes in his basket (at $1.25 each). You can get a ten-pack at Harbor Freight for 88¢!
Where quality IS a consideration, HF can sometimes surpass others. Every builder's square I've ever seen has the measurements stamped into the steel. After some relatively short time, these numbers become hard to read as the tool gets slightly oxidized or banged around. I got a replacement ($4.99) that has the measurements in brown on a yellow enameled background and couldn't be more pleased.