Fortunately with his (or her - Linda??) outrageous prices, most people are fly enough to not fall for such bull, but I do see this one has sold:
https://www.ebay.co.uk/itm/358558956337?itmmeta=01KS30XZG90WV7QVHWDYHQTRTW&hash=item537bc77b31:g:74IAAeSwAllqBx9t
Obviously, post mint damage. Part of me thinks if some idiot has £500 to throw away on this sort of rubbish, more fool them, but I do take the point that naive people might get burnt. Don' know what the solution is. Ebay aren't ever interested in reporting items like these...