The price is very attractive but also very suspicious. I checked the 28nm chip prices from bitmine, 40 chips itself = $2800 ~ $3500. If you sell your whole rig for $3250, I could see no profit or a loss even though you copy the design from others and spent $0 on the R&D. There must be some hidden secretes here. Caution: focusing on fact, not the promises.
We are serious business man,we don't like others would like to hidden something,such as high profit in their own pocket,we would like to make win win.Any way,everybody has their own advantage and we don't like to make some quarrel。Peaceful,inner peace.....