Wait about six weeks, see if Amazon introduces a US version of the PW3-32 for the holiday shopping season. *
This one:
https://www.amazon.co.jp/dp/B01FIG3SMC/
(About $145 + )
Amazon will only sell the Japanese version to a Japanese customer.
Which is why you have to have a Japanese purchasing service buy it for you.
There are several well known and long established purchasing services in Toyko that you can trust and use.
Google has their contact information.
The service charge and shipping will almost double the cost of the Kindle.
(There will not be any US customs to be paid on anything under $600 or $300, I don't recall exactly).
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(*) A PW3-32 with Android?