Well, not trying to cause any animosity here, but I would agree with Chris that the Film Toaster is really quite very overpriced. If I were intent on digitizing my negatives via a digital camera, I would seek out another option.
And I have. I got a Leica BEOON from a fellow RFF member (thanks Gary!) and use it for some of my digitizing. I also have a scanner (Minolta Scan Dual IV) that does nicely for much of my 35 stuff. I was hoping to use my flatbed scanner for medium format and large format, but its just too disappointing to continue with it. So, MF happens with the BEOON and an EL Nikkor 50/2.8 and LF with a copy stand.
I used my copy stand with a light table and whatever digital camera I had at the time to scan various negatives. I still use this setup for 4x5, although not often. The current digitizing camera is a Nikon D700, which honestly doesn't give much better results than my Olympus EP-2. But I'm done with the 4x5 until late summer at least.
Anyway, Chris is right. I'm surprised that FilmToaster thing is still out there. Suggests there are people who have bought it. Interesting.