One clip broke, and deal says I need to replace the entire thing??

earlynerd

I actually just repaired mine today with some 3D printed replacement clip holder brackets of my own design! If you have access to a 3D printer these seem to work great. just sand/grind off the remainder of the existing bracket from the rear of the B pillar finisher, then epoxy on the replacement, pop in the nylon clip, and good to go back on the car.
370Z B pillar finisher clips by earlynerd - Thingiverse

EDIT: actually i misread OP, wrong pillar. These are for the B pillar finishers. maybe something could be printed to fix this issue too? I can't tell exactly whats broken from the video.