When I was in the medal business I both sold medals to collectors and offered a mounting service. I was frequently of the opinion that people buying medals (usually replicas) of medals that they claimed to have lost were in fact not entitled to them. Often people went further, buying a medal that they thought they should have been given, perhaps a GSM where they had not quite done sufficient service in theatre. Some were even more blatant - I did manage to dissuade one chap from awarding himself an OBE on one occasion, but I am sure many others managed to fool me.
Looking at the chap in the picture above, even as replicas that group would have set him back several hundred pounds, and if the DSO and MC were originals then we are into four figures. It just shows how far these Walter Mittys will go to live out their fantasies!