We swapped out our old Viking Coder module for this. The setup was pretty straight forward. We had a few hiccups along the way but the online FAQ and phone and email support was pretty good and our concerns were addressed. Here and there we’ve had minor issues but truthfully with my lack of experience in the shipping end, some errors in weight and the fact that we often set up products and attributes in unexpected ways I can’t fault the product. The individual product level interface for the shipping settings has some obscure items (to me)like ‘Options weight points’ that I had to look up, and call to sort out; in this regard the only tjing that might be useful was if those items were explained right in the interface, but that’s nit picking. All in all a good product that addresses a sometimes cumbersome, confusing and complicated area (shipping).