It's costly banking and it's liable to go away at any point, says Sally VanderVeer, who runs the firm with her two brothers. So Medicine Man constantly plans for what would happen if it had to go back to being an all cash firm, even as it expands its operations to encompass 40,000 square feet. It's really tough, we're a legitimate industry, we have been written into the constitution of Colorado and yet we're still treated as third class citizens on many levels, says Ms VanderVeer. - BBC