Quote Originally Posted by griffin View Post
You can filter the results to only show "Amazon US items", and when you bring up the product page of the item, if it says "sold by" and "ships from" Amazon US, go up to the url address and remove the ".au" after the amazon.com and when you press enter the listing should change to its Amazon America page... and it will tell you if it is an Amazon US item (if it is a 3rd party listing, it will either say who the seller is, or will say that is unavailable because you aren't logged in with an American postal address).
I sometimes do that on more expensive items to see if the price is cheaper getting it via Amazon AU (as a free import, but sometimes they over-price the conversion to au$) or directly from Amazon US (in us$ with shipping).
So far, all Amazon US items I checked using the method above are 3rd party listings. I've never seen any that's sold by Amazon.com themselve.