My aunt doesn't spare even a second in a thrift store, because of how dirty and cheap they are but for years I've been telling her this is where people find things like vintage designer bags and stuff and resell them later on ebay for a ton of money.. never thought of autographs but come to think of it, a lot of schools have book fairs where authors come to sign or even colleges who have celebrity guests. So it makes sense, if a person isn't interested in the celeb and tosses the book aside.
I don't drive but I might add this to my list of things to try on my birthday on Monday - and look out for some designer bags, as well.
