Referring to the topic title, I have wondered this myself. 1/2 the aircraft I have bought were from dishonest sellers playing with my life! That's 3 out of 6 aircraft that turned out not so good- all advertised as ready to fly nothing to spend.
1. Told I can fly it home but opted for trailer, turned out alloywings severely cracked and x2 pod supports cracked right threw.( fixed up , flew,then eventually sold as wreck- plane never flew again)
2 . Whilst flying home ,engine failure( was due to old owner fitting incorrect fuel filter) and very nasty pitch issues(re- sold stating all the problems- plane never flew again)
3. After trailering home and a couple flights later, found a wing to be internally damaged requiring extensive work, investigation found plane had been involved in a crash , partially repaired and then sold to unsuspecting pilot ( me) cost extra $11k to rebuild .
2 out of the 3 came with condition reports. ( nothing noted).
Also only 1 out of 6 planes I have owned came with log and POH! ( the lightwing).
And that's just me!
Unfortunately I know of a few stung worse than me !
I would be happy with mandatory sale inspections by nominated , qualified inspectors( not just any lvl 2 ). Like a roadworthy for cars. But for planes... Unless advertised as non-flying.
Just my opinion
P.s. Every plane I have sold came with log book that I started and kept up to date records. As I have nothing it hide!