The Internachi Ford partnership gets members “X-Plan” pricing which is below MSRP by a fair amount, I used it 3 times this year. Bought two Transits and an F-150.
The X-plan saved me a decent amount off the transits, but the dealer incentives were better on the F-150 than the X-plan.
It doesn’t only work on building a vehicle, my understanding is that it only works on new vehicles. I n be bought 2020 transits but they were still considered new, and got 2021 F-150 because the inventory was slim-pickings. I have only bought used in the past but with the lack of used and new, the new vehicles were a better option IMO.