there is one that u can download for free. i'm not sure if it's exactly what you are looking for, but i guess it's kind of a guideline. you set up your prices, add-ons and you can add more items like say you offer blank shirts. its pretty cool and easy. i'll have to get you the link. its downloaded on my home computer and i'm away right now. but maybe its something to get you started in the right direction.
