Stanley Market is a fun tourist trap
Now, that being said, it's a fun place to go to just to walk around. You'll find a few bargains, but it's unlikely you'll know which ones they are. Check out things that are interesting to you, note the price and keep shopping in the back streets of Sheung Wang or Wanchai for better bargains. Once you're tired of walking among tourists,
just enjoy an exquisite European-like lunch at Lucy's (if you can find it--it's tucked above the delifrance chain, and you need to go up the stairs).