I now offer prints and other merchandise of many of my photographs. This service is available at the website www.URBANRAVENPHOTO.com. This is done through the awesome Zenfolio service, which makes setting up galleries and printing services a snap. Printing appears to mostly be done through the equally awesome MPix.
I can't claim to have a bunch of photographs up there yet, but I am working on increasing the diversity of offerings. Right now photographs can be purchased as prints (framed or not) of various sizes, in accordion style booklets, greeting cards, bookmarks, magnets and more.