Hammerhand:
Don’t know if these have been mentioned before (I’ve been away for a long time). They’re not in the wikki anyway.
Black_Dragons website
Look cool, but can’t find prices.
(and these are definitely conversions of GW dwarves)
They also have a pretty damn awesome Hell Pit Abomination and plague claw catapult.
Zanko:
The company was mentioned some time ago! 
They only make commissioned work - you tell them what you want and they make a suggestion and a price offer!
:hashut
ryanamandaanna:
Yeah, their modeling is pretty sweet, but if I remember right, their casting is questionable at times (I may be thinking of another one, though). I think you have to contact them personally for prices. They were pretty active on Ebay for a while, and then they suddenly stopped, so there may be a cease and desist in there somewhere as well…
Lord Fokke:
I like the former Gw dwarf submachine gunner dwarves. Although aside from some helm work, I think I have done much the same on my own army.
Loki:
This is a very cool site, looking through i have picked up some good ideas to use in my own armies 