I won't help you, but I'll make you feel even more depressed
Considering the absolute shitshow happening with shipments to the US and custom duties being slapped on the sender if the buyer doesn't pay them, nobody's gonna be shipping anything to the US for a long time.
The only way out is to use a proxy service and buy it yourself.
I think the pool of working Japanese MAK units is pretty much at the finish line. Kyowa apparently only produced around 5k units, which is surprisingly low to me, and Kyowa sold the most because they were the cheapest. I reckon at least half of them are gone for various reasons, leaving a maximum of 2k units in circulation on the second-hand market - that's really not much.
I think this is the final wake-up call to buy one in acceptable condition, because N.O.S. (New Old Stock) basically never pops up anymore, and used ones are in worse and worse shape. Overall, the NOS Sigma stock definitely dried up 3 months ago. This one guy in JP used to list them 3-4 times a month, then once every 2 weeks, and now he hasn’t listed a single new one in 3 months. Only random stray cases and used ones are left. The supply is officially gone. I’ve seen some hardcore auctions where NOS AV7000 and 9000BT (motherboard plus one stick) went for $600–700. I'm talking about actual auctions where people were actively bidding and bought it - not scalp prices where nobody buys it unless they miscount the zeros.
Even in Japan, I see people starting to fight over rusted junk that costs twice as much as it did a year ago. A Vega 9K with obvious, widespread corrosion and damaged laminate went for nearly $200 in JP recently. It was already in need of a total restoration - totally destroying the original concept, . Even if you love Japanese superguns, that model was completely useless, yet a buyer still snapped it up.
$300 is pretty unrealistic for a Raijin right now, but totally realistic for a Kyowa. This condition looks very good.
https://www.fromjapan.co.jp/japan/en/auction/yahoo/input/https://auctions.yahoo.co.jp/jp/auction/t1251776381"