Dear Dean please check our content site
www.ClassyContent.com that is great CMS to sell sets and packages. You upload and manage prices we market and sell it. Because your content is great we will make 70%30% split.
You can continue selling content everywhere esle but our customers would have a chance to see it too. we have Affiliates that promote our content store. this way we get more content buyers then other sites. Contact me with questions...Peace