Unfortunately I think the RM has caught the disease from the numerous other "numismatic collectable" con merchants out there.
I was called to a local shop yesterday to help evaluate a coin collection someone had brought in. My heart sank as I spotted a box full of leatherette cases from a range of the usual suspects. The usual cons: "Gold" coins that are actually layered, "limited editions" of 10000+, "collectables" that are anything but. The unfortunate owner had paid out over £8000 over a number of years as, he thought, an investment. He had sent them to one of the posh auction houses in London (I don't know which one) in expectation of a profit - they had returned it - "not interested".
Hence he had tried his mate in the antique shop and I had to break the bad news. There was some gold - the world's smallest gold coins collection - and some silver (Olympics ingots). The bulk was base metal with gold or silver plating and the hideous coloured enamels. I believe he would make less than a tenth of his investment back.
I left with my blood boiling. Surely it is time some ombudsman got onto these racketeers?