Assume that the utility Lord Stark gains from the servitude of 100,000 instances of you approximately balances the costs he incurs in order to create the 99,999 copies, although he gets a small net gain. He would not break even if he offered to create 99,998 copies.
The utility of people other than you, your copies and Lord Stark is not affected by the transaction (there are no externalities).
Assume that the utility Lord Stark gains from the servitude of 100,000 instances of you approximately balances the costs he incurs in order to create the 99,999 copies, although he gets a small net gain. He would not break even if he offered to create 99,998 copies.
The utility of people other than you, your copies and Lord Stark is not affected by the transaction (there are no externalities).