How do you price graded World Banknotes?
Curious about methodology pricing graded World Banknotes especially low and top pop. Do you use a matrix for grade, pop rarity etc. Or some other method. Lets say Krause CV for a note in raw Unc is $200. But you have a TPG note that is graded 65 PPQ with pop 1/0. You won it in auction for $85. Do you just slap on some arbitrary amount like $500? How would you price it for your inventory (shows) or online.