well you could try this really, if i got a sedan i'd do that.
http://forums.nasioc.com/forums/show....php?t=2208233 but i own a hatch and for me it was 150 for the spoiler from another owner, than 120 for a good paint job, i got very lucky. and i am installing it myself, after i get the water nozzle thing comin and some wiring issues, dude cut up the wire connector thing. all in all, its gonna cost some dough.