Why would you have to redo the PPF on the deck? The spoiler would simply bolt on top if it, I would think. But yes, you would probably have to plug the existing holes and drill new ones. Not sure, how the R version holes aligns with non-R. The spoiler has no paint protection, so if you want PPF...
I posted a price idea, since I have no clue, what this is worth. Will consider everything, since I have no use for it anymore. 400 is low though, since the repair cost alone was considerably more then that.
I have a spare OEM spoiler, which was in fight with my garage door. I had the spoiler properly repaired by professionals, and the spoiler looks like new. See pictures both before/after repair for full transparency. Can provide more pictures if requested. Mounting brackets and hardware included...