It is not very clear from other comments and the only photo does not correspond to the place. This is a store where you can buy groceries, electronics, cosmetics and some souvenirs. There are several of them in this wing of the airport, I advise you to go compare prices. But the choice is very small by the standards of Dubai airport
Gifts From Dubai
Shopping Center, 156, Al Itihad Road, Dubai International Airport, Deira, Emirate of Dubai, United Arab Emirates luxury shopping center
The airport is spacious without queues , but there is one thing . For luggage you need to pay separately and to do this. You need to pay either dollars or Derhams. And they don't accept old dollars. So you'll have to run