Our fine mix is quite different from our small bark as we also use fine charcoal and perlite instead of sponge rock. This is ideal for pre-mature seedlings to regular sized seedlings that love moisture. This mix holds moisture longer than any other mix we make. Not recommended for larger plants because it breaks down rather quickly. This mix is very rarely used because of its very small size. Approx. FedEx Ground shipping charge on 1 hobby bag: $10-12, 1 large 1.25 cu ft bag: $15-20, depending on region.