I'm not sure if this what you're looking for but I have a spreadsheet that keeps track of your gross profit and % cost per sale. For example if you have an order coming for $50, you put that in column B. If the cost of sale (your cost for the product, marketing etc.) is $20.00 you put that in column C. So $50 in, $20 out, for a gross profit of $30.00 and a cost of sales of 40% which is calucated with a sum formula. Nothing fancy but you can determine the % you want to set for as your goal and you can see if you meeting those goals per order / product.
If you want it, let me know and I'll email it to you. You don't have to pay me anything for it. Post back here, PM or email me: petepov -at- gmail dot com
edit- Just saw your post that you found something so nevermind my post.