PJ buy from retailers just like everybody else so their fault is the same as of Rinkya, KuboTen or the dozens and dozens of other companies who sell directly from Japan. They clearly have some source for the 009 that values sale volume over unit markup. The lowest markup a store should take is 30% (probably higher) so if somebody decided to charge half of their markup and sell 5 times as many units with nothing ever sitting in stock, then this makes perfect sense. Hell, I'd do the same thing.
If you have the KGSS boards then just build those. There is a thread somewhere in the DIY section with instructions on how to build a KGSS and how to pick the parts. Feel free to bump that thread if you need any help or just PM me.