Best I can tell, with the manual released, this is literally just a pump and a group head. The dial appears to control the pump 'power' (voltage, I assume), and that's about it.
I'm really, really not seeing what could possibly justify this price. If the 'control' is just as simple as an analog knob, then this is no different than adding 'flow control' via a common dimmer switch to any other pump. I've done this modification on vibratory pump models myself, and they function just fine when dimer switch modded.
"Just a pump with a group head" is still pretty cool. It isn't revolutionary, temp control is a "big deal" in the community, but it's pretty cool that OP created that.
The pump absolutely is a "big deal" though if they can deliver on it. It has been attempted (Decent is trying to make one - actually they have been trying for years) and no one has delivered on a pump like that to date.
A small rotary pump would be innovative, nothing like that exists currently. Vibe pumps are loud, but they are tested tech and live forever. A drop in replacement rotary pump would have a big market if it can stand up to use.
Yes, they are pretty big. Just the pump alone is larger than the pump + motor for a vibe pump, and the motors for rotary pumps are like 4-5x the size of the pump. So you're really approaching 10x the size, it's kinda wild.
I'm really, really not seeing what could possibly justify this price. If the 'control' is just as simple as an analog knob, then this is no different than adding 'flow control' via a common dimmer switch to any other pump. I've done this modification on vibratory pump models myself, and they function just fine when dimer switch modded.