Add camera to park assist? Audi A6 C7 2013

I have a A6 3.0tdi Quattro 2013, it has the feature of reversing itself, however no reverse view camera. Is it possible to retrofit this camera?
The car itself is a good spec, larger display and all that, however I can’t find anywhere to provide information on this, my local Audi dealer thinks it can’t be done but a local company say it can (but with a whopping cost).
I persume the park assist box may aid the camera...? Any help would be greatly appricated.

Try asking ‘Hazzydayz’ VW & Audi Retrofit Parts – Vehicle Electrics – Fault Diagnostics | HappyDayz