Why do your blanks cost more than other Worthless Wood type blanks?

My blanks cost more mainly due to the amount of prep work labor that goes into each blank.  Most of the wood that I use either comes from the roots of the trees or from wood that has a lot of "ugly" spots in them such as rotted areas that look terrible.  I spend a LOT of time meticulously cleaning out the rocks and dirt (whice is frequently hit with the bandsaw which trashes the balde) from the root stock and removing the "ugly" wood long before I cast the blanks.