Ann, that machine has been around for a while in Germany and The Netherlands, it has never been cheap.
Neither has any "Bought New" Jobo machine or part, ever been cheap either.
I have a friend in Germany who has one, with which he develops 4x5 in. Apparently it processes his 4x5 film, as flawlessly as his previous Jobo rotary machine.
Quite a few people these days don't actually make darkroom prints it seems, so a small footprint machine which can be stored in a cupboard alongside a film developing tank and reel(s), may make sense to them.
It does use a lot of chemicals compared to a Jobo, though!