Bait and Switch!?!?!? Wow, what a surprise!!!
Overall there are not many great electronic buys to be had in either SIN or HK. Yes, a new model in the US or Europe may be a bit older in Asia and therefore cheaper, but not THAT much.
This holds true for run of the mill products. If you want a "chipped" product or until last year a cheap (parallel) product, then HK or even Szenshen is the place to go. There are a few bargains to be had in HK in some products. There are none in SIN. SIN people go to JB for real bargains.