If the cover catches my eye, I look at the title. If it still interests me, I’ll read the back. If I like it, I’ll open it up and read a page or two. If I get sucked in and find myself on page 10 before I know it, I’ll buy the book, hands down.
I am a BIG fan of the library, too. Because I can borrow a book, and if I really like it, I’ll probably buy it, as well as other books from that author. I’m a picky one.