Thanks for the thoughtful comment!
Using local (to the winner) dealers as distributers is another idea to put in the mix definitely.
Though it does make the prizes less personal. Members usually like to hand pick pieces from their stack.
Also I think many members deliberately mis-label packages as medallions or collectibles to get around bullion postage restrictions, but to be fair - it usually isn't just bullion and they ARE collectible. If we try to do it "By the book" the MR probably also dies conceptually.
Really appreciate your suggestions and info.