I've got my eye on a couple of Gillette slim adjustable and Fatboy razors plated in Rhodium. The price varies greatly from other razors with original plate. How much does plating one of these razors raise its value? Assuming these are in good working order which is always a little risky. I trust at least one of he sellers, but he is asking almost twice he price of the other rhodium razors. What would be an average ballpark price for each?