For its size, it could easily have a 6W laptop SoC built-in. I'm thinking like a throwback to the old Apple II, Commodore, Amiga, and Atari computers that had the keyboard integrated into the main housing.
I'm not saying I'd buy it even if it were a complete PC... I guess my point is that its size just seems excessive, these days.
Speaking of expensive keyboards, I finally pulled the trigger on a Kinesis Advantage 2:
https://www.kinesis-ergo.com/shop/advantage2/