If you buy: 5/5
If you sell: 1/5
More about buying:
Most books are priced reasonably and you'll frequently find nice cheap books, especially if they show wear (e.g. I found a copy of "Brave New World" for $3...)
More about selling:
The thing is... even though they sometimes sell books very cheap, what they give you when you sell is still a lot, lot less. It is ridiculous, in fact.
I just went there with 4 books and 3 manga volumes. Two of the books, I bought at their store a couple of months ago for about $25. Were still in the same condition today as the day I bought them. The mangas were even mint-condition, one of them even still wrapped with the original packaging. Value: about $14 per volume new.
So that's a total of $67 (The two books I didn't buy there were rejected).
One might say that half the price would be reasonable. or maybe even $20-25. What I got was $15!! Are you kidding me?! That means ~450% in earnings for them!
So: NEVER sell books there unless you're really desperate! This is the EBGames of books!