So i'm going back to college in 10 days and I still need to buy my books. I was looking on amazon for some cheep books and one of the books I can buy used for like $2. Now that's really cheep for a book that usually costs over $100. It says it's in good condition but I don't know if I should trust it. The place has a 94% positive rating with over a million ratings. Do you guys think it's a scam of some sort?