J.C.
I know for me, I might pay $5 for jeans, but I would not pay $10 for used shoes, and would not buy used socks at all, but other people mights, so go for it and just be open to offers.
I just saw the update. I would pay $5 for woman's jeans, but not kids. I would not pay more than $2, maybe $3 for used kids jeans, and no more than $2 or $3 for the shoes either. If this is all kids stuff I would say the prices are way too high.