Proud joint owner of a 3 week old Mazda Cx5 (2018) which unfortunately rolled backwards on a hill and hit a van.

The bottom black plastic part of the rear bumper is scratched and scuffed near the top, with some pretty deep gouges.

What are the options here? Is it a relatively cheap part to replace?

 

Your only option is to replace it and no, it's not cheap as it has to be repainted (the black part and the painted part are one piece). BTW, pictures help...