Desert Poppy Paper Co. review for Advanced Shipping Rate Manager

My main product is sold by the square foot. Shipping it via UPS involves a large box to hold a tube with my product wrapped around it, and the weight for the box, the tube, plus the product (based on quantity). It's a complicated shipping calculation that needs the customer address and our linked UPS account. ASM handles this easily. On top of that, the support, usually Burt, to help users configure such details is domestic US support with expert, friendly people. One of the very best plug in apps for our store.