Not financial, but look at www.dinnernow.net.

>Looking for a robust, maybe financial-based C# application to learn on. Creating "Hello World" and reordering my stamp collection apps are fine, but I also want something meaty that I can break/fix because that's a more real life situation. Found a couple online, but they just arent' complex enough. Many sample of functions, etc, but nothing full scale. Anyone know of something? Thanks!