Having been to Denmark, yeah, everything is really expensive, taxes are insanely high, it's socialist, so I think that is pretty much why.
A cheap beer (light domestic) at a restaurant i think was like 4 or 5 dollars when I was there (granted, the Krone-dollar exchange is probably slightly different by now), and a sandwich is like 6 dollars, and that's not a particularly good or large sandwich. A pint of Guinness was like 8 dollars, haha, my friend and I split one because we wanted one but couldn't justify spending that much at that point (eventually we said F@#$ it and started buying beer at 7-11s)
My friends uncle used to bring up German beer and sodas and ciders when he went to Germany on business trips I think (I got kind of wrecked on some berry cider one night hanging with some friends and some Danish girls, made a total ass of myself :rockin

, I'm guessing he neglected to pay any taxes that may have been due on the stuff he brought back, I don't know how that kind of thing works there anyway.
It would seem to me that if you are in Denmark and don't have much money, you are just going to have to be content with not drinking much beer, as the cost of beer is ridiculous (A guy from Stuttgart told me Norway is worse, don't go there if you like to drink beer) and the cost of proper equipment and ingredients is probably just as high.
How much is like a 33 cL can of Carlsberg?