Yeah, I see this all the time - the sellers have a fundamental flaw in their thinking. Yes, maybe they spent 50K on tools over the 25 years they were working, and yes, may they think it's worth 30K or 15K or whatever right now - but the fact is, they probably bought all that stuff at $100/week.
The chances of finding someone who's got $30K sitting in their pocket ready to run down and buy 25 years worth of tools all at once is just about zero.