Dealer addendum stickers add $800-$1,400 in unwanted nitrogen fills and paint sealant

Dealers affix a second window sticker listing pre-installed add-ons like nitrogen tire fills ($99), paint protection film ($399), VIN etching ($199), and fabric sealant ($299) that were never requested by the buyer and cost the dealer under $50 total. These items inflate the price $800-$1,400 above MSRP and are presented as non-negotiable because they are 'already installed.' This persists because there is no federal law prohibiting dealers from pre-installing accessories and marking them up 10x, the add-ons are physically on the car so the dealer claims they cannot be removed, and consumers arriving at the lot after an online price quote feel pressured to accept rather than walk away after investing hours in the visit.