I just got an S2 and 10.1 tab from Vodacom for R499 p/m on business call. This also gives me 100 megs data for the first 3 months.
I did a relative price comparison on pricecheck. If I had bought the 2 together, I would be paying the equivalent of R535 p/m, so it's a pretty good deal. Works out to 502.60 when you add CLI, so not breaking the bank. It's a pretty decent deal for someone who doesn't use their phone for calls at all (like me) or needs business call for the rates.