As it happens, I was the one who printed off the flyers on the Company of the Fox's behalf, and apparently both the original flyers I made and the copies I printed off could be sold for 140 GP or so. I was given the fancy paper to write on by Osker de Larose's player, who probably got it from a DM. I think the paper simply had an artificially inflated price, and me printing them off encouraged some enterprising individual to go and sell what I posted to Djordji in the hopes of making money.