congratulations on such a great buy. I buy books, used like new on Amazon. When my hubby asks about the books, I just say, "you don't pay attention when I tell you I was getting that book (s)" and since the cost isn't much he says no more then 'buy buy buy!! (wihich i DON"T do much of).
Kinda pays him back for always saying "I TOLD YOU THAT. YOU JUST DON'T PAY ATTENTION TO ANYTHING I SAY!" giggling at my silly self.