We are looking for a WORKING example of a "T-Shirt Designer" in a similar caliber as Spreadshirt, Zazzle, CustomInk and so forth. If you have made such a clone or have some similar software, please PM with links.
Only live, working links will be considered. Your ready-made sample must be easily customizable and offer a complete "Design Your Own T-Shirt" system for custom items.
Low price, functionality, and ability to customize are key.