Thats most likely because the aftermarket hasnt started producing them yet, meaning it may only be available through toyota. I will add one word of advice... dont by Autozone.. I know mechanics who refuse to install their parts due to the lack of quality. I also wont use them.
I wouldnt be suprised if the camry one worked, however, the aftermarket may not have taken the time to reproduce them so they may not even realize if it is the same part. I would speak with the parts dept at your dealer.
"There is an idiot in every group. Look around... if you don't see one, it is probably you." - Someone paying attention