>XTO’s resource base is the equivalent of 45 trillion cubic feet of gas and includes shale gas, tight gas, coal bed methane and shale oil. These will complement ExxonMobil’s holdings in the United States, Canada, Germany, Poland, Hungary and Argentina.

The price tag of $41 billion for 45 TCF of gas is a bargain, that is $0.91 billion per TCF. I will take that any time for Falcon's portion of the 43 TCF :)