Inside the two bits of trim were placed one face down and the other above it with this single piece of thin bubble wrap:
Not surprisingly the drivers side speaker cover ended up looking like this

The paint essentially scratched off! I contacted the seller of course and to be fair to him he replied within 24 hours, apologised and refunded me the full amount (for both) and told me I can keep them. I would rather have the unscratched item of course, and he should have packed these properly, but here we are.
I've taken the metal grilles out of both sides and going to give them a quick dusting with a spray can which I think should do the trick - Q: do you think I should get Black Matte or Black Satin?
BTW, I tried touching up the scratched bit with a black Sharpie, and whilst it is much improved, in certain lights the touch-up is obvious to see and so I think I will still go with a quick respray.
Cheers