You have to be selective. I like to shop there for stuff that is hard to screw up: loggers' chain and clevis, welding rods, and such. Wife bought me an LED flashlight that attaches to my head (for all my bright ideas).
Best purchase was the furniture moving dollies rated at 1000 pounds. Regularly $15, on sale for $9, plus a $2 off coupon through email. Took the casters off and used them for a material cart I needed. Easily loaded about 800 lbs. (10 sheets of plywood) on the cart and the casters were great. They don't lock, but I don't need them to. Other casters rated at #250 or more were retailing for about $7.50 each.
Comments made here are my own and, according to my children, do not reflect the opinions of any other person... anywhere, anytime.