19/10/2014 - I can't really verify game time anymore as I bought 6 months in advance, but still works on paid services (just did a character transfer). My account was already set to use BRL from USD, individual results may vary.
08/11/2014 - Adjusted post to reflect that game time is no longer obtainable this way, only character services
Hey Everyone,
Simply by using BRL (BRAZIL REAL) as your currency, you can buy cheaper game time.
This was tested against AUD (AUSTRALIAN DOLLAR), so:
6 Months of game time in AUD 85.80 (75.0048 USD), whereas
6 Months of game time in BRL is 78.00 BRL which is 36.5844 AUD (31.9801 USD)
That's nearly 50% cheaper.
To achieve this, we simply login to our Battle.Net account, Go To Settings > My Payment Options.
On the right hand side, next to "Account Balance', you can 'Change Currency'.
Simply select Brazilian Real, and that's it.
Picture for clarification:
You can then go to your account, and use that to use character services cheaper than you usually would