To make things clear of the false information posted .
These actually produce more than $9 daily and only use 400 watts . At $1250 they should ROI much faster than any SHA-256 asic.
Specifications
Manufacturer Obelisk
Model SC1
Also known as SC1, 2-board (Gen 1)
Release June 2018
Size 200 x 200 x 360mm
Weight 9000g
Chip size 28nm
Noise level 65db
Power 500W
Wires PSU include
Interface Ethernet
After the power cost you can earn 7 usd daily. My first post was 6 usd because currency rate changed. My purpose is not whiteant this selling post just i am thinking 180 days roi is so long for second hand asics. But of course if you are not agree with me you can buy it. If seller can give a reasonable price i want buy as well. But on this terms i cant buy.