Crayon rocks: a review

I bought crayon rocks  for my daughter last fall. She was overjoyed by the organic, easy to hold shape, and the colors in the 16 count box. Like stockmar block crayons, the crayon rocks can easily cover large spaces, but also make different sized lines. They are great. They also hold up very well. They are held by the child in a very natural way. We have had ours for 5 months, and they are far from used up. They are made in the US by a small homegrown company from soy wax. A natural renewable material.  The 16 count box is only $6, and the shipping was $2.50. I have to give these an A++. Just a note, I accept no money, or other material gains from product or busines reviews. I am just passing on knowledge, and goodies.