I was able to do a build on Costco's website using zip code 27007 but for some reason the page is blocked on my home PC, but I was able to build and see the Costco pricing
and I built a 2020 SCREW,blue,802A,Black leather,hood and side graphics,Twin panel moonroof,spray in bedliner,Factory installed 3 panel hard bed cover,2nd row heated seats,foldable bed extender,remote start,Pro trailer backup assist,Voice activated Nav,360 degree camera,Power folding heated mirrors,
The total price from Ford was $74,855 and the price from Costco was $69,685 and according to Costco`s auto buyer program sales help 800-755-2519 the dealer that they suggest you use has to honor the price from Costco. There might be an issue with any incentives but using it will save you over $5k
I have used their auto buyer program 3 times and never had any issues. Back in 2018 when I bought my Jeep Rubicon JLUR they were selling like hotcakes and the dealer still honored the Costco sale price