Just came back from hk yesterday. Brought nikkor 70-300 vr at 2800 from tin Cheong camera at sim city. Pay by visa, end up paying more of sin $40 resulting of $829. Cheapest in sin is selling at 870. So saving of $40 dollar.
There is a defect on the cap holder sticker, went to Nikon service centre this morning, with the receipt, no answer ask and replace this cap sticker and also clean my d7000 sensor at not cost( under warrenty), up for NSC.
So it you take whether to buy in hk or not, however this apply yo nikon, if were tamron or sigma, better to buy in Singapore in my option.
Also aliu street is a must to go!