I also had some shipping problems..No: a stop me in may tracks shipping problems..I got some help early this morning about how to work things out.(read HELP for warehouses tutorial set up) What I did was set up different warhouses numbers/names with prefixed shipping amounts. I then used those different shipping warehouse prices for my inventory. Say, in may case, I need to ship an item, which I advertize with a price of shipping $25.00. In the inventory set up that item was assigned to the warehouse with set up for the $25.00 an stocked that item to that warehouse. Another item I ship is $35.00 I assigned that item to the $35.00 warehouse number an so on.You can set up any number of warehouses. Now when a customer buys an item it will show only the shipping charge for the warehouse it is assigned to. What got me to try to find a better way was with the items I sell, a customer may purchase two items with one having a shipping cost lower than the second item, since the customer chooses the shipping method he wants, you know he's going to pick the lowest, and I loose. I tested it with the items I sell. First I only loaded two different items to inventory which will ship at a different cost. I set warehouse 1 with one price and set warehouse 2 with another shipping price,etc assigned the item to the warehouse one item to each. Now I tested: When I purchased the one item the shipping was correct, purchased the other shipping was correct, purchased both items at one time it showed two shipping cost to the customer. Customer could not choose. Both added to invoice. Hope this makes sense, it took me awhile to get it to sink in. I tested and it worked perfect, at least for me..
RV Cooling Unit Warehouse
http://rvcoolingunit.auctivacommerce.com