Another yates 108

[Farley3415]

So I've looked at every post i could to get some more info but maybe someone can help me.

To start off we have a small sawmill and have been having our lumber t&g at a local shop. 
My father found a local guy with a powermatic 225-b planer and bought it along with a few odds and ends, the guy he bought it from also has a yates 108 set up in his shed with a detroit diesel engine dust extraction whole nine yards.
He bought it and a installed it in the 1950s and run it up till 10 years or so ago he's asking $5000 for it and everything with it.
My main question is if its a decent deal or not? 

[customsawyer]

I don't know much about Yates planer but I know it don't take very long to have 5 grand just in knives and heads for a planer. You might ask to see it running before buying it.

[moodnacreek]

In my experience old cast iron machines don't sell especially if they are anything bigger than single phase. Most Americans don't make things anymore and don't even own a table saw.  The man who owns that planer is at a big disadvantage . It would only take one person to prove me wrong. The trick is to buy it cheap without kicking a dog that is already down.