only 3 exist ROFL. there exist a lot more (a friend has 10)
i have seen some months ago on guru. one has been sold for 100k+30e - maybe it was a fake offer.
but fact is: there exist a lot more than u can believe !
Hehe, used to have tons of these (still have a fair collection ) but like Giant said, there are indeed thousands of these around and I personally wouldn't pay anything for it..
maybe you can get a couple of k's from a collector or so..