Very interesting place to visit, but expect to buy nothing. What this place has to offer is an old narrow street neighbourhood transformed into a tourist targeted commercial area. That means: unique experience, good architecture, cute local stores selling tid bits that you don't actually needs, small cafes / restaurants and not so cheap prices.
It's better to visit this place late in the afternoon, so you can see the area transform from daylight into moonlight. I found this place looks more attractive at night.
It's quite interesting actually to see how they smartly transform a small studio appartment sized housing into a store or cafes. How they decorate and squeeze all that things in there. Lots of the cafes has only 4 - 5 tables which is quite a unique sight of you're into architecture and interior design.
If you have a spare time to kill, you should pay a visit. But if you're looking for a shopping experience, international brands and more luxury cafes - you should visit xintiandi instead.