$100 for that machine is practically a steal. You can't get a Klippermate for that price. Also this is a Taiwan made machine. Much better quality than the later China made machines.
That crack looks more like a scratch. I had a Hawk 800 before and the base is soild sheet of steel.
Machines: Gamma 6004 2-point w/ Wise 2086 & Babolat Sensor Dual