Need Deville Nightvision Lens

I, recently, looked at my 2002 Deville nightvision camera lens and realized that it is shattered. I don't know how a rock could get in there but it must have.
Does anyone know where I might be able to find a replacement lens assby. for it? The dealership wants $290.00 to order one.

Besides eBay, and some online junkyards, it a dealer only item, since the nightvision systems were and still are a rare option. I like www.gmpartsdirect.com and www.gmotors.com for discount GM parts.
Just be thankful your Deville wasn't an earlier model, those didn't have replaceable lenses and the only option was to replace the whole camera!