I just checked and they're already marked down on the HD site.
I haven't yet figured out the model numbers though - they're slightly different comparing HD to the QJ sites. HD is a 5000SLX, QJ only shows a 5000TLX so it might not be apples-to-apples. I wonder if it's just a naming difference or if it's similar to the Lincoln welders HD sells, they're not quite as good as the ones you get at a welder's supply.
Apparently each side is 80 lbs - so at least they're not super heavy and an old man can move them around with a little grunting.