I was searching an American book not sold in German, and found this:
Every time you purchase a book from BetterWorldBooks.com, you help us donate books to people that need it. The books we donate go through hundreds of non-profit organizations.
I saw some people on Reddit confirming that it works, but I'd like to ask here. Has anyone here used this site to buy a used book from abroad? The idea is interesting, but free shipping?