Completely agree. I constantly run into people thinking their silver coins are worth a king's ransom when I buy collections. Coinflation is a great app to have and is simplistic enough for even the non coin collector (even a child) to understand. Also, pcgs's site is helpful in the aspect of showing what "retail for them would be", then you can proceed to show what provident is paying for them. I have to usually do that process on unknowing customers to get them to trust me. Some still believe they have a gold mine though haha. Why wouldn't I want to buy your gold mine?!