Don't forget to figure in Shipping costs! Can't recall ever using this particular brand. It might be the buy of the century, or there could be very good reason why they are so cheap. Seems to me, on every code job I've worked, if there were off brand 6010's ordered, it wasn't long before they were rejected/refused by the welders or "accidently" water damaged.
Sometimes a deal is not a deal. Are these factory seconds, rejected for quality or performance issues?