Follow ebay. I haven't seen any of those for less than 300 Euros and I never seen one sealed. They are usually popping-out but unsealed.
It would be very difficult to track it only in States. Usually the sellers are aware of it's value and are offering insured international shipping with tracking.
I managed to get mine a year ago in a very great shape, mint (including bonus disc) but not sealed!
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Looking for the following steels at reasonable prices:
God of War Omega Edition
Assassins Creed Anthology - G2
Assassins Creed 2 (spanish one)
Gran Turismo 5 (dutch sticker-book)
Rage (only interested in G2 size, Spain exclusive)