The way I look at it is that the chances of 2 daft people in this world coming together is remote.
What I mean is you have someone daft enough to pay it and secondly someone daft enought to hold onto it whilst the price gets negotiated past 1k-2k-3k etc all the way upto 10k.
I agree, whilst these things do happen I still hold out my sceptical eye, unless it's someone who is known that is involved.