My suggestion is to check a local junkyard. The part will be used, of course, but are usually in perfectly usable condition. If you do find it, it should also be much, much cheaper than getting it from the dealer. You should just be able to tell the person running the place the same information you told us (make, model, year, and specific part), and they should be able to tell you if they have a vehicle there that might match.
If you can't find it at any local junkyards, let us know, because there are a few stores that might carry it as well.