It was rolled out pretty quietly last week, but Drivethrurpg has made their "retail" program official, where individual publishers are able to list printed versions of their books for sale, giving many publishers the ability to sell offset printed books along with print-on-demand options. Right now it is US-only. Customers place the order, which is forwarded to the publisher, who then fulfills the order and ships it out. Here's the page of filtered retail options: as more publishers start to add their titles to the list I'm sure this collection will grow.
