Not sure where the cheapest place is, but Prepaidgamer has it for R335 - Final Fantasy XIV: A Realm Reborn 60-day Game Time. I actually don't think there's any other local places offering it.
Alternatively, if you have a credit card, and depending on the exchange rate, you could also just subscribe directly: http://eu.finalfantasyxiv.com/pr/product/




. I should get a early access code right? Kalahari doesn't specify anything.
