All pretty common, Jay. But for curiosities sake, check the outside frame of the carmine 2c. If it's made up of 4 very thin lines then your stamp is a Die I. If the border is made of a thick line between two thin lines, it's a Die II. Die II marginally more valuable (
) but once you figure out which it is, then you'll have to go looking for the other one.
It never ends.
Sorry was looking at an old catalogue. My 2011 Unitrade puts a Die I 2c carmine at $.50 and a Die II at $.75 (that's for VF condition).
Don't know were you were getting your prices, wert?