This appears to be a rebranding (at nearly three times the price) of the Gakken Record Maker (which is still available online for its MSRP of ¥7,980 ($55) [1]). It even comes with a copy of the Gakken magazine! Here's a review of the Gakken record maker (which looks identical to the Teenage Engineering one) [2], the Japanese description from Gakken [3], and an English description from a reseller [4]. Gakken is a Japa…
The margins on everything Teenage Engineering sells must be insane. Thinking in particular of their "computer-1" itx case which is a handful of pieces of unbent sheet metal and commodity parts, all for a mere *$195*.
I wouldn't be surprised if it was something like 400%+ on everything but maybe the pocket operators. Even those probably have healthy margin, as it is just PCB + some buttons. custom LCDs in tens of thousands are also insanely cheap (in ballpark of $1 for something like that).