MIA: Roof Rack Crossbar Cover

MIA: Roof Rack Crossbar Cover
 
I lost one of those plastic covers for the OEM roof rack crossbars.  The ones with the lock that says Hummer on it.  Guess I forgot to lock it on after putting on the ski rack.  Anyway, dealer wants $40 for one cover and I have not been able to find any online.  The part number is 12499401. If anyone knows where I could get one for less, I would appreciate it!
 
Thanks. 

You should try the new member on here I think his tag is gmpartsdude, he said he would give us a good price.  I haven't seen just the cover ever on Ebay, that maybe your best bet.

He has a website www.gmpartshouse.com check it out.

Thanks for the info.  I had tried ebay and no luck.  Will try the member.