Nah, there were 3 runs if i remember right, 1 beta and 2 production. Everyone who wanted one at the time got one. A lot of people bought 2 or 3, but you're right they might be hording them.
The kit is pretty simple, it loads a digital image through the dongle instead of the cassette. Cuts down the wait for the tape. I'm sure someone will start making them again eventually.