Yes, I was browsing scopestuff pages last night and spotted those, including the ones with 10:1 fine focus. And they have proper fitting ones for 10 and 12" OTAs as well, not just 8" like we have here. But look at the prices! Some of them are close to double what we pay here for the same thing!
here are the ones that would bolt onto skywatcher/saxon newts/dobs:
http://www.scopestuff.com/ss_fnc4.htm