I saw a book in Amnesty International once but couldn't decide whether or not buy it, so I went down to the basement to look at the sheet music.
When I came back up the book was gone.
Just a few days back I saw a book in a local charity shop and...
I get almost all of my books from secondhand charity books shops. There are some really good ones where I live.
The problem is that if you don't buy the book it will be gone the next day. Almost all of my books are non fiction