there is no beer for 20-25 QR in Doha. The cheapest one is around 35 QR. And I don't think your license will help you, unless your goal is just to get drunk...you go to the bars not only for beer, but rather to socialize...
and hey, that's good that they still have ANY beer, even for 35-40 QR... even that can get banned one day...
i just came from Thailand... beer there 9-12 QR, man..