I just would have to see that price from ford. If they bring $250+ used I don't see ford charging less that $500. Their big brake kit is $1600 ish and I don't think rotors, pads and lines are over 600 bucks.
I don't know what to say, but these are the part numbers I used and the prices I paid. They are coming from an online Ford dealer..will be here this week.
BR3Z-2B121-B CALIPER, LEFT $316.96
BR3Z-2B120-B CALIPER, RIGHT $246.40
BR3Z-2B120-B CALIPER, RIGHT $246.40
Punch the p/n's into google and you will find plenty of vendors with a variety of prices.