I had such success I encouraged my friend to go pick up toys and books for her son. It was a few weeks after Christmas and they must have gotten tons of donations over Christmas because I had never had such luck in the toy section before! She asked me to go with her to show her the tricks of buying used toys and books. While there I taught her a great tip that I will teach you!
DON'T OVERLOOK SOUND BOOKS WITH DEAD BATTERIES!
All you have to do is look on the back, or in the front cover of the book. There are instructions as to what batteries are needed for the book, and how to change them.
Go to any store (I went to Walmart) and you'll find them in the hardware section. They are pretty cheap. You'll see link at the top from Amazon is only $1.99. You'll need a tiny screwdriver, the ones you use for glasses. Unscrew the compartment, switch out the battery, and ta-da! Brand new book!
I got a $16 book for $0.50. I bet someone threw it out because the batteries had died and they thought it was no good any more.
No my son has a super-cool, super-manly book that only cost me about $2.50!
Happy savings to you :)