This was an early birthday gift from me to myself (my birthday was yesterday).
Ordered them from Japan on ebay. Quite a few sellers list these. Prices are comparable. All sellers have anywhere from 5 to 15 business days before shipping them, which means that they do not have them in stock but they are buying from somewhere else (perhaps Nikon). I found a seller with good feedback, one of the lowest prices ($647 shipped - I used my ebay points and saved $45) and the lowest delay (5 business days). Here is the link: https://www.ebay.com/itm/284198833572
I ordered them Saturday July 3 and were delivered to me in the USA on Friday July 9 with DHL. So, great speed and service from this seller.
I ordered the blue version (would have preferred red, but it makes no real difference). I have been testing them for the last week or so. So far I am very pleased. Quality is good (for 10x20) and stablization is perfect. Of course, the Canon 10x42 is still the king and my favorite pair, but now these will be my traveling pair when I want to pack light.
Something different: Without the stabilization turned on, only the right image is visible and it vibrates a lot. You have to press the button at the top (which is turned on/off easily often unintentionally) to turn the stabilization on and get the stabllized image from both sides. In one respect, this is nice because you always know if the stabilization is on or not. The battery seems to last a long time and you can have a spare (there is a little holder that goes to the strap - you can see it in one of the pictures) always with you. Replacement batteries are $15 for 10 on Amazon.
As I said, I am happy with the image, quality of construction, and handling of this pair. Better than the Canon 10x30 IMO. I am still testing. The fact that they are so compact means that I now take them everywhere I go, which is a big plus.
Stabilization is a game-changer for me. Especially at this small size, it is very difficult to keep the binoculars steady. I wish Nikon would introduce more stabilized models and other manufacturers would offer stabilized binoculars.
Is it worth the $650? It is for me. It would be nice if they were offered for sale in the USA for less, but I am fine with the cost vs. performance ratio.
Here are some pictures of my pair: