Pherdinand said:"The Yashica Electro 35 CC is the only other rangefinder with a lens that wide, and it'll be hard to find and out of your budget, I think." -I just got one for eur40 in perfect condition, incl. battery. But it is rare, indeed.
Good 28mm prime lenses for slr's are cheap (f/2.8 to f/3.5 range) and not bigger than 50mm's. Of course, the full body+lens will be quite big. But it can be had for way less than $100.