Cool, thanks for the info and the link. I still don't understand why his press runs are so limited. The prices on ebay and amazon are ridiculous for some of the earlier titles.
Probably hard to tell what the "rarest" or most expensive is, but Nightmare seems to be selling for a quite a bit. I wont be selling my copy any time soon. The Severed Arm/So Sad About Gloria double which Bill pulled from sale, in my opinion would maybe be one of the hardest to find now. My copy of that is still sealed, I'm having trouble unwrapping it when it could become one of his most sought after. It's hard to guess how many copies of it actually shipped during it's brief time on sale.