I fully agree that there are crooks out there that are quite willing to misrepresent their cars. I actually paid top dollar for a T touring that was represented as a well sorted tour car by the owner. ( A well known player in the old car world) What was missed in the description was that the Ruxtell axle had been switched for an unknown, well used, regular assembly, the Bosch mag had been replaced with an aircraft mag with no advance mechanism, the Rocky Mountain brakes had been removed, the double wish bone had been removed & who knows what else. This left an unsorted car that was unuseable for touring that took months to fix. I could have lived with all of the switched parts if the seller had not sworn that the car was exactly as he & his family had used it for several years.
There are other situations that can be just as frustrating;
There is the fellow who thinks he knows what he is doing that "restores" a car & truly believes that he has done everything correctly BUT everything is sort of correct & in reality needs to be redone often taking more time & money to repair the damage done. The military restorers often refer to this fellow as "Bubba". These fellows rarely realise what they have done & ask the going rate for a restored car. The mess created can be more frustrating than thr rattle can restoration passed on by the actual crook.
The third situation is the owner who hires most things done. Often a substantial bill for, say, a valve job, soon becomes a complete engine rebuild in the memory of the owner. A wheel seal becomes an axle rebuild, etc. These people also fall prey to the crook who sometimes cuts corners & bills them well. Again, the seller thinks the car is worth top dollar since he has paid so much out. The saving point here is that he often keeps the bills & you should go over them well to try to interpret actually what was done.
The bottom line is that all purveyors of junk are not crooks but the buyer is wise to seek the advice of someone who actually has been there when looking at a model T.