Here are several links that will help, I tend to get carried away ;)
I also wanted to mention just how lovely your cookies are! They are very detailed, clean, just beautiful! For me cookies take forever! You should definitely charge for your time there! It’s very difficult to find someone who can make nice cookies like that!
Generic Pricing Matrix:
http://www.docakes.com/PricingCakes.html
Pricing matrix like the Cakulator:
http://bakecalc.com/
Cookies pricing matrix:
https://docs.google.com/spreadsheet/lv?key=0AvflfTGZ15dhcG1CRzk0dUI1Vzl3UzB2a0w5WUJnYnc&newcopy
Cakes pricing matrix:
https://docs.google.com/spreadsheet/lv?key=0AvflfTGZ15dhcG1CRzk0dUI1Vzl3TFQ2X2laVWtDQUE&newcopy
Great Blog about pricing and business:
http://jasonkraftblog.wordpress.com/
