After taking its sweet time releasing the Xperia Z5 and Z5 Compact in the US, Sony thought charging $600 and $500 respectively for the devices seemed like a good idea. Well, they're already discounted via Amazon for $50-60 off after going on sale February 7th.
These are the same basic devices you could get previously as international models. However, you get a US warranty in case something goes wrong. Sony also removed the fingerprint sensor from these devices because it hates making money. I don't know this to be true, but it sure seems that way. At any rate, you can pick up a Z5 for $539.99 ($60 off) in black, white, or gold. The Z5 Compact is $449.99 ($50 off).
The Z5 Compact is in stock, but the larger Z5 is almost gone. There are a few more of the black, but the other colors have a 2-5 week wait. You can order any of them now and they will ship as soon as Amazon has them available.