There’s quite a thriving market for the sale of so called rare 50p pieces going for crazy money on eBay. I’m convinced this is some form of money laundering. These are prices that these items sold for. Genuine vendors then see these and then think their coins have this value. The genuine rarest non misprint special edition 50p coin is the Kew pagoda which in mint, uncirculated condition will go for between £50-100.