Heh, I will just get from the shops here in Singapore when they launch it on 5th July, given there's no delay of course.

As usual, 69.90 sgd for local released games, it's the same through out the island because the price is controlled, so there's no difference at all if you buy from Courts, Harvey Norman, Sim Lim or your friendly neighbourhood game store. It'll be 20-30 dollars more expensive if you get different region games and of course, you have to make sure your console is the correct region version to play those imported games.
If you don't mind looking around for a while, try the trading forum of singaporead based Xbox360 forum. There're quite some around and they have a very lively market running.