timppu: Anyway, I'm a bit concerned also if I have some problem with the purchase, and need support from Amazon. Can they decline, if they notice I am not from US in the first place?
Reminds me when IBM declined a support call when they found out the device (serial number) mentioned in the report is not in the same country than the contacted support center (even though the problem was generic, affecting all similar units).
Actually, this has happened, and Amazon did not give a refund... but then you may say that the person n question was silly by telling Amazon what country there where from when talking with support. It was on that SteamGifts forum, the person in question was ranting and raving, provided screenshot of chat and things.
But do bear in mind - if anything do go wrong, you have forfeit your rights by doing a fraudulent purchase. It is very unlikely that something do go wrong, but if they do you may find your self up the creak without a paddle.
One reason why I do not bother with the US Amazon sales at all. (another is that I do not want to make myself a liar just to save a few cents on a game, which then goes on sale somewhere else where I can legally buy it a few months later. It not like I lack games to play)