knowing where you are approx (even just your state) may help people.

http://car-part.com/  (if you hadn't tried there yet)  Just in jersey alone they are between $400-900.. more of a spread the farther out you go from jersey.  Cirrus and Stratus shows they share as well? (so maybe Stratusphere?).  You can sometimes pit the yards against each other and get them for a cheaper price.  Good Luck!