I live in Norway, and used international checkout via the sewelldirect-site to purchase my adapter. Including shipping and vat I ended up paying almost three times the price, good thing I make a lot :) .
However, the reason for registering is that according to a discussion on norwegian tech site hardware.no and their forums hosted on diskusjon.no (meaning discussion.no), some guy claims that calling the local dell spare part provider and asking for part no XT 625 (dell apparently confirmed this is the active adapter) actually solves the problem living in Norway where this item is "unavailable" by simple means. His total cost including shipping turned out being around 560 NOK (which by the current exchange rate vs $ is less than the common $ 100 mentioned here). My transaction ended up at 1500 NOK :) in comparison...
This link is to the page discussing the matter, elegantly translated using google translator. The post in question is the third from the top, from a guy named MIRACL. <- safe link