https://parts.ford.com/shop/en/us
This is Fords official site. Just a heads up but try to check several dealers since they do vary from one to another. I got the updated T stat for around $25-30 from one of my local dealers which is less than E-bay or Amazon.
Yes, the dealership parts departments must have freedom to list their own prices. I found only one of the 4 dealerships in my surrounding counties lists their prices under the suggested retail price and I typically order from them when they beat rock auto or amazon (which is often). Register with an account and you get free fedex ground if you can wait a few days and dont need to pick up the part in person immediately.
My advice is use the dealership search function and find a dealership that has better prices. I think they are drop shipping the parts regardless.