Yes, it depends on how many copies they have, etc. You bring them the books and look around while they figure out what they are going to offer you. You can accept it or not.
I took a big box of books to them once and was surprised how little they gave me. It depends on how much they believe they can resell. If they recent and popular it's more
I think you might want to call them to ask your question.
I have no idea. I don't work there. But they are very fair in their offers. It will depend on Title, Demand and 'Rarity'.
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