What's My Worth

etsy.com has a Holiday Boot Camp Challenge. One of the Challenges is to reevaluate your prices. So, what I am to do is to take the cost add the labor and multiply it by two and the sum is to be the wholesale price. Then I am to take the wholesale price and multiply that by two and that is to be the retail price. How am I to determine the cost of a button bought in a jar of old buttons. Or two inches of ribbon. Better yet, two little leaves cut from a $.25 square of felt. How do I determine the cost of my labor? This is tough. Wish me luck....who ever is listening.