I believe it goes like this:

    Boeing: Do you want a two line code which triggers a potentially life-saving warning when your flying sausage with wings has an important sensor malfunction?
    Customer: Of course!
    Boeing: That'll be $25K, thanks.

Also, no-smoking light toggle labeled Off - Auto - On is being relabeled and rewired to On - On - On is hilarious.

Airlines don't negotiate prices based on the exact options selected, they select a list of options and then negotiate on price from there. This particular option does not appear to have a price associated with it, it just increases the cost of training and documentation for pilots and some airlines would opt out of using it.

People talking about MCAS seem to simultaneously pound the line that everything on the aircraft the pilots encounter should be trained for and forget that adding new stuff to the flight displays will incur additional training that an airline may not want to deal with.

It's what happens when you load a company up with MBA grads who only know cookie cutter business plans with no actual business acumen or experience.

Such a terrible business decision considering the crashes and their impact on Boeing's reputation. If you think a feature will keep the product from catastrophic failure, it should be standard on every unit you sell.