"The purpose of nitrogen in normal automotive tires is the separate you from your money." (John)
Think about it nitrogen has been used in racing tires for many years but it is only recently that the option has creeped into the auto buyers options. It is one of the latest BS line items to do exactly what John said in his post.
Doc fee is another one
Here is a link to a father and son team that have the car market pretty well defined in my opinion.
Navigating Car Dealer Fees: Your Ultimate Guide https://caredge.com/guides/understanding-car-dealer-fees#Doc_fee
calabrese55