Thanks guys-- Ruben hooked me up. I have seen them going on ebay recently, with the original cookpot, for under $50... I mean, brand spanking new they are under $100. Any of these selling for $150 must be non-self cleaning R models (older) or other rarities. These have a down-angled adjustment key, not like the one pictured above.
These stoves are really fun, I plan to use mine for canoe camping, and maybe short backpacking excursions with the kids.