Dark Horse Carbon Fiber Wheels = $8,995 (standalone) +$4,995 handling package (required) = $13,990 total
Ford has updated the build and price, they have added the carbon fiber wheels for the Dark Horse and have fixed the issue where the base DH had leather seats and the premium DH had cloth...
If I was you then I would ask to speak to the owner of the dealership and raise hell about it or escalate the issue farther up in Ford. Them forcing "accessories"/markups on anyone is ridiculous and should be illegal.
It was a mixup on the website between 600a and 700a if you go to the standard dark horse it shows leather seats and cloth on the premium, it is just backwards for some reason on the build and price.