The odds are that it won't be very good.
According to the reviews that I've seen for all of the other knockoffs, they are just cheap pieces of junk looking to grab some buyers who confuse it with a Roomba.
I've never seen the Robo Vac, but it's probably along the lines of the Zoombot, which was compared with the Roomba in This Review
I would guess that if this thing had any value whatsoever it would have generated some buzz. Otherwise, it's most likely just another poorly working knockoff like the Zoombot, eVac, Robosweep, RoboMaid or Intellivac.
According to the reviews that I've seen for all of the other knockoffs, they are just cheap pieces of junk looking to grab some buyers who confuse it with a Roomba.
I've never seen the Robo Vac, but it's probably along the lines of the Zoombot, which was compared with the Roomba in This Review
I would guess that if this thing had any value whatsoever it would have generated some buzz. Otherwise, it's most likely just another poorly working knockoff like the Zoombot, eVac, Robosweep, RoboMaid or Intellivac.