No reputable shop I know would be anywhere close to $2100, more like 4k and up, my problem with PPF is so many inferior installers, no way I trust them with a box cutter knife, seams that aren't done well, bubbles etc...
One guy at a detail shop told me this
PPF = Paint Protection Film ... NOT Paint Perfection Film
If you hear this I suggest you leave quietly
I have a Buick Enclave that has 150 000 + k on it and has been driven to Florida about 10 times through the Virginias ... and all it has is 1 tiny chip that you wouldnt even notice unless I pointed it out to you
PPF cant hurt but is it necessary ? ...Arguable
A good shop will charge you a crap load and its not likely you will get a perfect job