Longyearbyen

Svalbar
PO Box 573
NOK 45 for a beer

Good bar with reasonably priced cafe food.

Nordpolet

In svalbardbutikken. sells a full range of beer, wines and spirits, but quotas apply except for wine, which has no quota and you must show your plane ticket to purchase again except for wine. also note the restrictive opening hours: 11 am to 5 pm weekdays, 11 am to 1 pm saturdays, closed sundays.