A little price range from the highest I've seen via auction on one site for a signed FDC postmarked stamp on envelope, and a single stamp from another site who has since raised the price as I advised her to look into that as it was going for $50 and up that day elsewhere.
Most I paid for a stamp, but I felt bad, she sells clothing she makes as seen in the note, plus the stamp is way awesome.
Hope this doesn't violate advertising rules, I blocked out the names for that reason.
Anyone wants to know can ask me on one of my memes.