It's the only site I can offer in reply to this thread. Note that it has an English interface (the blue flag with the circle of stars, under the reindeer emblem) that is quite good. This is a site for Russians, so plenty of the books are in Russian--but many are not, but rather are in a Nordic language solely or in a Nordic language and English.
The prices for Russian books are not unreasonable, but I don't know how the non-Russian book prices stack up. Shipping (this is a guess) should range between $10-$20 (US). I've never ordered from them.
Steve, do any of the bookstores in Sweden that you have bought from have websites that process orders?