All three publishers are offering free DLC to those that buy their titles brand new. Games involved in the scheme includes Mass Effect 2, Dragon Age, Race Driver GRID: Reloaded and SOCOM.
If a second-hand buyer wants to access the same content, they have to cough up a one-off payment.
But the retail giant's COO Paul Raines feels that expensive DLC is something that does not appeal to value-orientated used game buyers.
"We have been asked questions on publisher actions to limit resale value of new titles," said Raines
"We have learned that the second-hand user is a value-oriented consumer. The average price of a used Xbox 360 game is $20. So we don't believe that a $10 add-on piece of downloadable content is compelling to a used game buyer."
Despite this, Raines wants publishers to offer cheaper DLC to used games buyers, so publishers can earn some money from pre-owned sales.
"We are encouraging publishers to offer add-on content for new titles at a higher price, and then a lower price option for used games," he added.
"In fact, publishers can participate in our used business, by offering add-on content for the most popular used titles, creating a win-win situation for publishers, retailers, and consumers."