To me, from what
@Bandit has reported, this could be a “calculated risk” deal. We know the axis work manually - so the machine is functional in that respect. The 5hp, 380/415V is typical European (mill is made in Spain): powerful and compact. Most of the time, these motors can be run on 220V as well. Check the motor data plate to confirm.
That leaves the spindle bearings and power feeds. Spindle bearings can be replaced (if it turns out that they are done, once mill is under power). Power feed system is a bit tricky, as operator error could have done substantial damage. Most of the time though, it is just shear pins that take the brunt of the “abuse”. They can be replaced. It requires deep dives into the gearbox (which by itself can be challenging as more often than not, special tools are required - which can be shop made).
So, I would try and get a feel from the seller how much interest they have had; are there any offers on the table? How many people have actually come to see the mill? I would start with a low $ figure as my offer citing all these mechanical unknowns. If they decide to hook power to the machine to “disprove “ your concerns, then things can go both ways: if it all checks out good - you may have a decent machine for a reasonable price, should you decide to go near their asking price and they sell it to you for that.
If things are indeed bad (noisy spindle, busted power feed), then your suspicions were correct and I would immediately change my offer to an even lover number because of all the issues (as they are now confirmed and they are witness to them).
If the seller wants to be rid of the machine, they may accept your low offer and you have a machine that needs (potentially a lot of) work. If you get it cheap enough, a repair is worth it as once everything functions correctly, the value goes up by a lot.
The replacement cost of the Accu-Rite DRO is well over a $1K just by itself.
The rise block can be taken out and sold - if one feels they are not going need it.
Oh, the location can also be in your favour. If you are close, might save a bundle on moving costs. If it were closer to Calgary or Edmonton, there might be more interested buyers.
These are just some thoughts I would have in my head if I was in the market for this type of mill.