Which version is this - USA (GD1YQ), Global (GTT9Q) or Japan (G5NZ6) ?
I would also like to know this 
Hello. it’s the USA model.
Who is the seller? Direct from Amazon or is it the same third party you can see on Amazon site?
Woot is the seller. We’re getting these from one of our vendors. It will ship directly from them.
So what’s the advantage of getting it here if the Amazon website also sells this for a lower price and faster delivery time?
is the one on Amazon the Japan or US model? is it new? I bought a “new” Pixel 3A on Amazon and it was not only Japanese (possibly no big deal) but also the box wasn’t sealed and no tamper seal covering the usb port, there was no way for me to know if it was messed with or not, returned it for a full refund, don’t sell a phone as “new” if it’s not factory sealed, that’s the only reason I pay extra for “new”!
I’ve bought several pixels direct from Google and I don’t recall a specific USB port seal…
But, yeah, the box should be sealed if new.