Has anybody here ever picked up the matted pics that they offer at the USPS, that are cancelled like stamps? I was there today, but was in a hurry and there was no one at the window to ask how much they were. They had a really neat one of Harvick beating Martin by a nose this year at Daytona. I thought I may get it if anybody knew anything about them and if they end up being worth anything. It doesn't really matter if it's not worth anything, but that helps me guage how much I am willing to spend. TIA!