I recently ordered two books from Escaparate, an online Bolivian book distributor. They just arrived in the mail. I’m pretty impressed; it took a little more than two weeks. And the shipping wasn’t too pricy ($11.40 for two small books shipped overseas). Since Bolivian books are often quite cheap, it balances itself out. If you’re looking for Bolivian books (in any discipline), check them out.
This is a great resource, thanks for posting it!
I didn't want to post about it until I "tested" it to see how international delivery/payment worked. Of course, my sample size is "N=1" ...