Good job! I hate it when they try to take advantage of customers.
I went to Lombard a couple years ago and they had the best price on the ESP. Everything was online and very convenient.
The 'extended warranty' (it's insurance,) is a good way to go when you have a vehicle with expensive electronics and other pricey components prone to failure. The other option is leasing, but that's another thread
When it's time to get service on your Ford the Service Department will see that you have the Ford ESP. In my case, I received a better experience than prior to purchase.