it sounds interesting, I think it's the first "chorus" pedal that have heard with self oscillation since I sold my PolyChorus; it's probably his take on the EHX pedal or a clone but it is cheap if you live in Europe (don't know his shipping quotes for worldwide destinations though), looks cool (possible to make custom artworks) and not as big as an EHX pedal can be.
If only there were more videos on youtube. Does anyone have one here? I saw that dan_abnormal was selling 2 Effectivy Wonder pedals, he maybe could be able to share his experience with his order.
Fuzzonaut about the RM-1N:
"Amp in a box"?
No, there's no amp in there - tone fairies and feedback goblins live inside this box.