looking to buy R8 quarterpanel,**HELP**

Hello , i am in need of help locating a passenger side quarterpanel, ( aluminum ) the problem i have is Audi will only sell this item to a authorized Audi repair shop, and those shops will only sell it if they do the repairs. So i am out of luck for the time being, the car is a 2009. I would consider a used quarterpanel or brand new makes no difference to me.I do not think anybody is making aftermarket parts but if they are i sure would like to hear about it.Thanks in advance for the help. also this part is the upper quarterpanel the lower is plastic and available thanks again.