how much will it cost to replace front oil seal at the dealership? on 2006 Lincoln Town Car

I have an extended warranty, and they are saying the replacement of the seal is only covered if needed to perform a different repair.

Asked by for the 2006 Lincoln Town Car
If warranty wont pay get it fixed at an independent shop! Not that big of a job. May need new crank balancer (pulley) as well, which would be "a different repair"! Review your copy of the warranty. They could honor this as warranty if so desired!!