The logic of spending over $100k on a 150 escapes me, but my first thought when reading the ad was the guy/gal did not do this for an investment. Someone probably put their soul into building this plane just the way they wanted, and now for some unforseen circumstance can not enjoy the finished product. If true, to me that is the real shame of the situation.
I agree Charles. This sale can't have been the original intent.
Also, IMHO, if a person comes by a sum of money legitimately I believe he/she has every right to spend that money in any legal fashion they choose as long as it doesn't cause them to go on the public dole. Peroid. Only that person can pass judgement as to whether or not the money was spent wisely...because since it was their money, THEY and they alone have that right as well.
Not to say others can't have opinions of course, but we all know what our opinions are usually worth.
It's possible the owner may have restored this particular airplane for very personal reasons, then passed away or had some financial catastrophe change their whole situation. Who knows. It would be interesting to hear "The rest of the story".
If resale value wasn't a factor, which would you rather have: This restored 150 for $65k or a SkyCatcher for $120k? I think I can guess which airplane will have the longer useful lifespan (barring an accident of some sort) if given proper care. I also know which airplane is historically likely to be about as economical to own as any on record

Would I spend $100k restoring Birdie to an aircraft to behold and be admired by all? If I had that kind of money and could write the check without a second thought...welllllllllllll...maybe. After the 17 years of pleasure she's given me, I just might.