I am in the market for a jointer and found a Delta 37-315 8" one come up on CL. It looks to have very little rust, but the person that has it doesn't know if it runs. He thinks it may be 3 phase, so he has no way of testing it. How much should I offer for a jointer that I can't test run? What's the worst case i guess, new bearings and a motor? If it's 3 phase I can get a cheap VFD from work and run it off 220VAC.