I've seen planes this cheap...for a reason.
Corrosion.
Significant engine problems (despite low SMOH numbers)
Corrosion
Ratty Interior
Corrosion
Missing logs "I have the logs somewhere"
Corrosion
"Annual with sale" Annual last week for sale.
Recent Corrosion X treatment.
I looked at that plane a couple of years ago!

The corrosion was fizzing and dripping out the seams and the owner wanted me to come on a test flight with him. Even in my rookie state I knew that one was a bad one. Fortunately my phone rang and it was a client with an emergency which allowed me to gracefully withdraw.