Several years ago I discovered a company called Mixonic that provides CD and DVD services. They do one off and short run disk duplication and printing. You can get a single CD with full color printing on it for about $5. I'm sure there are other companies out there now that do this type of stuff, but when I first discovered them, they were the only ones I could find. I still haven't used them, but I love the idea. Would be great for portfolios or, if you are a wedding photographer, providing a professionally created and printed disk and case to your brides. It looks like they still offer a fulfillment services as well. So, if you have a disk you would like to try to sell, they actually take care of the delivery end as well. Not clear from a quick glance at their site if they still offer a store/shopping cart but they used to. Some day, I'll actually give them a try. If you beat me to it let me know how they do.