How much money would I get if I sold some of my old clothes to Plato's closet?

don't worry, the majority of the clothes will go to goodwill or something. I just really need extra cash! I want to sell the my aeropostale clothes like my jackets, shirts, and pants. They aren't worn out. How much would I get if I sold it to them? an estimation please? do I have to set the price range or do the workers?