Why? Do you seriously think they'll ever ROI?
who knows.. I've had 2 jupiters for 20 days and mined 37.5 BTC,
if I held all the coins until today I would have 50% ROI as cash now but I was selling into the rally so more like 36% ROI as cash so far
had some downtimes and one miner running about 80% until today's FW brought it up to par
YMMV - food for thought - FYI, etc