listen, you paid what you thought it was worth to you
that's how retail works
they buy product, then sell them at a markup
you buy products from them only if you think it's worth the price they're asking
you get the product, they get the money
I don't think about the price, It's about reselling something you got at a charity.
Plenty of stores sell cheap, used stuff that everyone can fit in their budgets. More and more of these resellers are picking the stores clean, leaving a lot less available for those who "need" it.