If your thing is gold, diamonds, alcohol and cigarettes... This is the place However if you are buying other things such as watches, electronics and such, then do some homework.
At first glance given that everything is supposed to be cheap you think that everything is a deal... NOT TRUE. Take the time to find some wifi and look to see if the price quoted is even close to what you can get online from a reputable retailer.
I found that bottom line prices on watches were upwards of 20% higher than online and electronics are often difficult to match.
Electronics also carry a caveat that the warranty might not apply when you return to your home country. Something to be VERY conscious when you are about to drop over $1000 on a high end SLR.