I don't see $4,000 worth of useful parts there either. The table itself is probably still okay, but the rest of it is iffy at best. You can't expect 20-year-old mechanical parts and electronics to function correctly and the motors, if they aren't worn out, are obsolete. It certainly doesn't look like it's in working condition to me, and even if it was, I think you'd be further along if you spent your $4k on new parts, rather than this worn-out and neglected old pile of junk.
I bought mine (quite like yours) and upgraded it with Clear Path motors, all new wiring, all new electronics (UB1 and EC3eth) and UCCNC. It came with 2 Perske spindles, valved vacuum bed with t-slots. No ATC. It'll run all day for days at a time (if I have the work) if I ask it to. My investment in the end was what I would easily call reasonable to in the end have a 5' x 10' machine. Just sayin'...
Some don't get it. Personally, I get a big kick out of making something out of nothing (or little). It was a learning experience for me to take mine from surplus to serious, but with the help of this forum (especially Ger and others), I'm way ahead. Try to determine the "tightness" of the machine and go from there. If you're machine is sound (do they ever really wear out?) and you have time to pick at it as I did, you'll be glad where it takes you. If you want some additional encouragement, go price a new 4' x 8' or 5' x 10' machine.