Thank you, it looks like the star took the brunt, along with the big black concave piece. Ebay have just asked for a photo of my grille to be certain, and then two minutes later have confirmed it's being posted.
It's a push and twist fitting, and arrives tomorrow for £29. Can't really beat that. The Mercedes badge is in 2 parts, one part is over £100 alone, so I'll risk this.
May well be made in the same Indian/ Chinese facility?
The messy bits are where I tried to use epoxy to repair it, and failed!