How much does it cost to reseal an entire motor?

I drive an escape 2001 v6. I dropped it off yesterday at ford for the $60 diagnostic and they are telling me it is leaking oil so bad that the entire motor needs to be resealed or replaced. I figure a reseal costs less, so how much would it cost?

Added (1). ponderer i don't know what you mean by do not go back there, like don't go back to ford?

The first thing to do in a case like this is change the pcv valve. It regulates the internal pressure of the engine to keep it from pushing oil out every where. Then wipe areas down to locate and fix the worst leaks first.
Do not go back to the Ford Dealer. New motor indeed.

HI what the Dealer is wanting to do is put new gaskets and seals on the motor. And Yes Ponderer means don't go back to the dealer. They are the most expensive place to get anything repaired if you don't have a warrenty.
If leaking oil is the only problem then find an independent shop to do the work. Go to a car self wash and clean the motor off with there Tire/cleaner chemical, be careful not to get the electronics to wet. Then drive it and see what gets oil on it or over it and you well find your leak.