.Buying an extended warranty *at all* is getting worked over. Maybe even bent over. Wait until you're out of warranty or close to out of manufactures warranty and then shop around. Many places will offer you great discounts on long term warranties for close to cost and the difference in price between buying it as a new vehicle and one used is largely negligible.
Pretty good advice...
Some other things to know (used to be true a couple of years ago when I last checked):
Flood's prices are about $100 over their cost. Anderson And Koch (http://andersonandkoch-ford-warranty.com) and Lombard (http://www.lombardfordwarrantys.com/index.cfm) are 2 other Ford dealers that have similar ESP pricing.
Also, it used to be that if you wait to buy the ESP coverage after the first 12 months of ownership, it increases by $100.
If you buy new every 2-3 years (like I do), it might be prudent to wait until you're into the 3rd year (towards the end of the 3/36). And then, if you're planning on keeping it a while longer (and if you still want the ESP coverage) buy it then....even if it is $100 more.
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