Anywhere outside of Pakistan, one can find reasonable prices. In Dubai town, if you step into local markets like Bur Dubai or Deira fot example, the shops are small, but items are genuine and prices very good.
Similarly, here in Saudi Arabia, if one visits the local markets, the prices are very reasonable. The shops in Malls and Duty Free @Airports are definitely overpriced, due to high cost of business and operations.
One does not step into Duba Duty Free to expect cheapest prices. Its more of a convenience than anything else.