Upload & Sell: Off
In my experience, shutter count is not especially relevant.
Assuming you're talking about the 1DIIN in your profile, your seller's inaccurate shutter count could be a completely innocent error. Some (if not all) well-known, freeware shutter-count apps are not accurate. This was frequently discussed when the 1DII-series cameras were relatively new. It's quite possible that your seller was misinformed by an app that he or she assumed was reliable. Anyway, don't worry. In my experience, shutter count is noGt especially relevant.
I guess you're right. We are talking about a frickin camera here. But as as the owner of a construction co. If I were to sell a backhoe and told the buyer it had 20,000 hours on it and it really had 60,000, Mistake or no mistake, I'd be writing this post from my hospital bed. That being said, I think I will keep the camera and use it til the shutter craps out. When that happens I will just replace it.
Thanks for the input.