It really depends on where you go, and what you're looking for.
I know Tom Lee in Hong Kong has certain brands and models that are cheaper than what you see in Singapore.
If you're talking about the Gibsons and stuff, chances are the prices are going to be similar regardless of where you go.
Heh, some extra info:
I just saw a couple of burnt blue jems, as well as a good selection of J-Customs here in Thailand.
Extremely GAS inducing.