niagra is good. i buy a lot of stuff from there. that's a fair price for new stuff. but check out CL and Ebay i've bought some long reach (47-57mm) NOS single pivot brakes from those sites awfully cheap once or twice. always insist on a description of the reach in millimeters not just "long" or "regular" or "short". i have found those terms are used somewhat arbitrarily.