Now usually these are filled with crappy romance novels and 15 copies of both Tim Allen's autobiographies. But I found some gold.
I found the "financial/business section" which was about a 2 foot length on the bookshelf. Looking through them all they were mostly on how to start a small business or how to do your own taxes. But the near the end I found 5 college style books.
Removing them from the shelves they all happened to be college text books on marketing!
Now, I don't know if it was dumb luck or what, but I'm just sayin...
It's worth a look.
Edit: Should probably note they were $3.50 a piece.