I bought a 1976 150M in October 2017 for 26K from an A&P/AI with a fresh annual. It's one of the bicentennial models with the red, white, and blue paint. It was freshly repainted with 10 SMOH, ~7,000 TT. I have upgraded the Nav/Com and transponder. Still considering whether to go with ADS-B. I knew and trusted the seller completely so I didn't do an additional pre-buy inspection. Although mechanically its in outstanding condition there are a few cosmetic things that some independent "inspector"would have noticed.