The_Driver
Flashlight Enthusiast
I don't know about replacement bulbs, but the ff3 can be bought for $270 from China. It's the first hit when you google "fire foxes ff3", and everyone seems to have had a good experience buying from them (including me). There are two left in stock right now.
I don't think that there will ever be replacement bulbs for sale since the return wire of the bulbs goes through a hole in the reflector. Removing the bulb from the light would require soldering which is not something that most people do.