I thought I’d mentioned Charlies Playhouse on the forum before, but a quick search shows that I hadn’t. (I really,really need something for my memory )
Charlies Playhouse is a website that sells evolution toys and keeps an updated list of books on evolution for kids. Check out their Evolution Resources page for the book list and other cool links for kids and adults.
I haven’t bought anything from them yet, so I don’t know if they ship to S.A. Some websites say that won’t ship to S.A. because of problems with fraud etc, but I have found that if you contact them, they will in most cases make an exception. A Paypal account helps too.