car-part.com and ebay might be the place to look.
You might get lucky and even get one in the same colour. Make sure you get the correct ones since some come with the fender liner trim (and holes) and some don't.
Good luck. Look for years 2006-2008 since they are the same car.
Your suggestion worked great. I was able to find 2008 door for my 2006. It was in great condition and the same color. It was 3 hour drive verse paying $175 for shipment. They had it off for quick pick up. I would not of found this without your suggestion. A BIG THANKS:smile