Usually I'd just refer you to the PriceWatch link at the top of our forums, but unfortunately, they've removed their "only show shops that ship internationally".
But, as I'm in a good mood, I've gone through the list of shops which has the
X800pro and found the following to support international shipping:
PcConnection
MonarchComputermight ship to SA (send a mail and ask for a quote)
I'm waiting for a reply from OnSale.com (as they had no information about anything on their site)
CompuPlus does support international shipping too.
So if you now click on the PriceWatch link on top, you can browse for the product you want, and then use one of the shops I've listed above.
But you have to remember that the shipping might be quite expensive, and that customs might add taxes to the final price when it arrives in SA.