Pretty sure they only deal with new books.
no
Michael is correct, they only deal with new books. If you are looking to sell books I'd recommend either Green Apple Books (6th/Clement) or Forest Books (Buchanan strip mall, near J-town). Both of them buy and sell used books, but how much you get depends on the condition of the book, whether it's considered to be a "rare" edition, and if there's a viable market for that particular book.
I was there about a month ago, and it's only new books that they sell.
They sell it, but don't buy it.
I cant remember, been a while since I've been there
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