Im in the same boat. I have been looking around at options and there are a few that i know of.
Its not cheap, but hey if your making money online you gotta get paid somehow...
Ive found these guys, all look reasonable, maybe someone can suggest which is best, or another reasonable offer.
https://www.vcs.co.za/fees/vvendor.asp
https://www.payfast.co.za/s/std/fees
https://www.webcash.co.za/