I go thrifting for clothes a lot and one time stumbled upon the book section which before that I never thought of for some reason. But walked out with a bunch of really good books exclusively paperback but max being $3 in surprisingly good condition. Might be difficult if you have a particular book in mind but great option when you have no clue what to read next. So instead of strolling through barnes and noble and walking out with 1 $20 book, I now aimlessly stroll my local thrift shops and only buy new books when I’ve been really meaning to read them.