In UK or Germany?

That would sound good to me too

Well I've recently obtained two K-50s on clearance, both had a shutter count of one on receipt as after two photographs to test them they are both now on three! One was new and boxed, the other was the store's ex-display model (body only.) I'm looking to move them on so if any one might be interested in either or both please PM me for more details.

I never indulged in narcissism so I've decided I don't intend to start now. I'll leave it to the Facebookers and Twitterers.

I'm not sure I like those ghostly effects at all.

Sounds like you don't have the camera still? You hadn't said it was one you'd sold on rather than an issue you'd just experienced yourself. So have you witnessed the problem with your own eyes? I ask because I thought I had a similar problem with my Pentax Q on delivery, but I'd put the battery in upside down!
If its been couriered though it may have been dropped, suffered vibration or goodness knows what.
It is even possible the buyer had a dead K-3 and saw you as an opportunity to take their pain. If you haven't witnessed the problem, how do you know how it is in reality? Plenty of scammers use eBay etc. for various reasons, both buyers and sellers.
Sounds like you'll have to get it returned to sort it out unless you know someone in the area to have a look at it for you.

You're right. I expect some will get someone else to take it for them!
Long focal lengths might be a bit of a give-away, or some have very long arms.
Is an auto-portrait the same as a selfie (or however it's spelt?)

Hope you source one OK - let us know how you get on.

Well, yes, but only in vague terms.

Could something like this have been used, meaning in effect the photographer just set up the shot, the device captured the exposure?
In the interview comments, the point is made that he is a great fan of high-speed technology and using flash to freeze movement. Big clue there me thinks.