I doubt the n900 is manufactured in the usa, so customs fees and shipping costs also apply. Taking into account VAT, the n900 is still ~15% cheaper in the states. Not the usual rip-off (for us europeans) on nokia part this time, but let's see how the price will evolve (I guess that in a short time you'll find it for less than $400, while the european price will stay at 600-650€, depending on country and local VAT rate).