Prices are 20-30% lower than in duty free, but some famous global brands will cost about the same. I bought whiskey (medium quality) 1l. for 30 dirhams - 750 rub, in Russia the same 0.7l bottle will cost 3800 RUB. (You can't write the name, the moderators delete it). There are also nice promotions. The only downside is that there are very long queues of migrants (Indians, Pakistanis, Africans), you have to wait even outside the store until it resolves. If you decide to go there or go, then be sure to take a passport with you.
A good store. Everything you need, the prices are gentle. 2-3 times lower than later in the duke in almaktum. You just need to register with your passport. But it's fast.
For Dubai, it is a normal store. You can not buy in dyutik, but buy everything here. Prices are even lower!!! Beer, took five brands (the most famous) is very good. For our money 200 rubles for about 0.5. Whiskey liter 4400 for "Black Label". Indian rum, also good.
In general, do not take it with you, go to the store.