Not sure how bad the price of door clips are for the other models but for the GC's the price's area bit insane. 5-7 bucks per clip and a door panel has 11 on it.
One of the parts guys in McMurray took pity on me and gave me the name of a website for them.
www.clipsandfasteners.com they ship to Canada to. Just ordered a box of 50 clips for 6 bucks.