Thoughts about buying a Bedini 100

Thanks to all for sobering information - I've decided to pass on either...

... always wanted a KBA-75...

Spoke with tech about the BELDINI 100: said no mods, replacements or upgrades have been done. Assures me it could (probably) last another 10 years ( YEAH, RIGHT!)... Said to replace all the " necessaries" would be about $500, which might be reasonable but to me sounds like (again) too much - I really don't want to spend that much for a power amp...
I really want to spend less than $500: have one Parasound HCA-750a -  anyone's thoughts about using another of these to setup Parasounds as Mono amps ( take out the Yamaha)? Or suggest another alternative amp. I will want to bi-amp or at least bi-wire the KEFs...

THOUGHTS, SUGGESTIONS OR EXPERIENCED OPINIONS ?

Since this is all new to me:

What would be the most important replacements to do 1st?

Can partial replacements be done? - can a tech evaluate what's still good and what should be replaced, instead of a blanket replacement?

And I'm sure this seems like a foolish question - but if I listen to it before (which I'm sure I should) - how do I know how 'well' it is working, or even how 'good' it might sound with replacement electronics?

atmosphere

The electronics rework sounds simple for a competant tech - but should it cost around $500?