She tam is the cheapest I know of at R26000. I wouldn't go there though as it's only 2 hours in the aircraft. Not enough if it's your first turbine.
Simuflight is the best. I think it costs now about R31000. You do about 8 hours in the sim then 1.5 in the aircraft. Brilliant training. The sim has really improved as well. They are now in centurion not grand central.
43 advanced at lanseria is good from what I hear but over priced at close to R40000. They use simuflights sim anyway so it means more moving around. Although I did hear they were building there own.
There are some other places as well but those are the most used.
Cheers,