"These chaps" are Jap4Performance, they're site supporters, Tyga UK distributors and the owner is "gavin jap4" on this forum. He'll listen if you talk to him.
People calling Magteks "HRC" is nothing new and Gav's been trying to sell this wheel for that money for a long time, he's got two hopes, Bob Hope and no hope...lets see what this one in Japan goes for. It's got a sprocket carrier worth about £20, a nice sprocket probably worth about the same and a tyre on. It currently has no bids and a start price of £39 so the wheel itself is effectively free.
Though as you've said, leaving the wheel size off the ad is a bit dodgy.
I've left the ebay link there as it's you, Andy can decide if it stays
_________________
Please do not PM me technical questions, if you can't find it on the Forum start a thread