Thanks, Jora, for answering this. Indeed, I think you could finish the demo in a single day. But of course it depends on how you play the game. You could spend several days talking to everybody, exploring, fighting, collecting booty, bartering, solving subplots, reading the history encyclopedia, etc. But most of these things are optional, and the main plot is neither long nor complicated. So in the extreme, I think it would be possible to 'finish' the demo less than an hour, by talking to the 3 main protagonists, and running one or two errands that are absolutely unavoidable, and voila, you're done.
However, in my personal opinion, the main enjoyable thing about Teudogar is not so much about the main plot, but rather, about getting to know the ancient Barbarian world, getting familiar with the mentality, and tasting life as a Teuton for a while, which would imply doing and exploring lots of things unrelated to the main plot. This way, I think the demo can keep you occupied for a week or so.
Shipping CDs: I've come around to the majority's view that shipping physical CDs is a silly and time-consuming nuisance, and I will offer downloadable full versions in the future, not just of DARGHUL, but also of Teudogar. I've already set up the basic infrastructure, but it'll still take some programming and web programming work. Unfortunately, I haven't got the time to do this soon, so I'm forced to stick with CDs for the time being. Shipping usually takes only 1-3 days within Europe, but may take about a week to the U.S.