Well, as you may have seen around here at Tagplace we have been rolling out this brand new content management system and are really testing it and hammering it with information, working out the few final kinks and adding lots of new features. One of the new features is allowing content authors to sell copies of their work through their TagPlace. We really think this will be a popular feature and hope it will convince more authors and publishers to write and publish under a Creative Commons License.
The features currently allow authors to mark individual pages of their content as For Sale, and define the purchase price and the license associated with that content. We take a 25% commission for the sale, and the author receives a Receipt and a Payment 
Later, we will work on Trafford publishing, a really good print on demand publisher, to allow drop shipment of the printed books if someone decides to buy your entire content place as a printed volume, but that is later...
Happy Tagging