Why Do Optics With Best Star Tests

Seem to show up on the astromart classifieds...almost all the time?
I mean I see this frequently: "I've owned several of these SCs and this one has the best star test, not to mention the least focus shift, of the three I've owned..." Or words to that effect.
So why sell it?
Or, this generic brand name newt, dob or whatever, "has the best star test I've ever seen..."
Er, ah, how many have you seen?
If it seems to good to be true...
OTH, I recall an amateur posting some actual images of his star tests from a C11 and they were pretty good but...
I suppose I'd have to see some posted images with the ad in order to believe it...

You make a solid point.....but I doubt we will be seeing many ads that say "so-so optics" or "awful optics" anytime soon

Rod Kaufman said:

Seem to show up on the astromart classifieds...almost all the time?
I mean I see this frequently: "I've owned several of these SCs and this one has the best star test, not to mention the least focus shift, of the three I've owned..." Or words to that effect.
So why sell it?
Or, this generic brand name newt, dob or whatever, "has the best star test I've ever seen..."
Er, ah, how many have you seen?
If it seems to good to be true...
OTH, I recall an amateur posting some actual images of his star tests from a C11 and they were pretty good but...
I suppose I'd have to see some posted images with the ad in order to believe it...

Gee Rod,you sound like a skeptic. Me, I am a skeptic, when I see an add like that I have to wonder why anyone would be selling a scope that has the best optics one has ever seen.

I also wonder when I see this: " I have two of these, I am selling the better of the two."

What I like to see is a careful description of all the faults and a simple statement that optics are good. When someone describes all the faults it tells me their concern is that buyer know exactly what they are getting...

Jon