Can anyone help me as to where I can find a pricing matrix using scratch ingredients? or is it possible to manipulate the one already posted?

here's the link to Alice's pricinr matrix. You can go to the recipe tab and put in your own recipes. Just go to the last tab and read the instructions. I use it and with a couple of changes to fit my biz, it works great!!
http://www.cakecentral.com/cake-decorating-ftopict-5711.html

Hope this gets you going!!!

Dave