Well, I would certainly pay the $3K-$4K if I could order a car with that package. I paid $5K for my current set-up that included the new baseplate and installation, AF-One supplemental braking system and installation and a new Roadmaster tow bar for the coach (tax included in price).
It would take less labor if done at the factory before the front-end was put on.
I have a front camera built-in under the 'Lincoln emblem' in the grill to help me line the car up to the tow bar. When I hit the button, the Lincoln emblem pops out exposing the camera.
The 'Neutral Tow Mode' in the instrument cluster is an easy set-up. A few hits toggling through the menu, you are ready to go. And, the display tells you 'Neutral Tow Engaged'.
Safe travels,
MM.