Its usually between 8-to-15 dollars per title. There are several factors such as deals made with the developer, deals made with the publisher. Bungie there isn't any royalities since they are part of Microsoft so they recieve their funding from the company. But take for example Developer X they go to Publisher Y to get their game on Console Z. The Console Manufacture takes $10 of the revenues, the store makes about $15 of the revenue, the Publisher take $15 of revenue so the developer only ends up with $10 per game if they are lucky sometimes the Publisher takes a lot more because they are in charge of things such as advertising and getting it publicity so they take more when they have to spend more. So sometimes the one that ends up getting screwed is the people making the games not the Console manufacture, not the publisher (unless the title really bombs), its the developer.