That is less then 10% of the total sales of the game which I would call pretty limited. Of course the game will be bundled a lot in the near future its a prime canditate for this years holiday bundle and will probably be one of the first retail games that will be free for a limited time on Games with Gold but they still will make some good money off those copies since by then they will have more DLC buy then and a good chunck of the people that got it for free will buy some of the DLC.