I really am sure there are quite a few of these coins to be found right now if you are in the know. I bet many a in the know farthing collector has picked one of these out of a rumage box for say 50p or so , i am sure if all the existing coins were gone through a lot would come on the market and the price would come down. I am also sure this will not happen overnight so it will be a gradual process with the coin becoming slightly more common every year. Only if the number of collectors increases rapidly will the coins rise in value. Colin is at least trying to do that for us i surpose. I would guess most around are in gvf + grade due to the short time they circulated. Most that were minted are still in existance now i would think , well prob 60% anyway