Website is really ugly but I guess there's no need to make it look good for textbooks. Never used them before but I've found Van Schaiks to be good for textbooks.
I've actually done some more research and found kalahari to be quite less expensive than bookwave, making bookwave a bit redundant, I think.
And Van Schaik is way too expensive, I'd rather go to Protea if I want to buy physically from a bookstore. (But then again, it depends on what your looking to buy.)
Currently found a book on Kalahari for R591 (R450, second hand), which cost R696 at Bookwave, and R722 at Protea.
On the topic of textbooks - where can I sell mine - I have loaded them on kalahari - but that proved to be useless. Any ideas? They just gathering dust currently