Rate Table Shipping plus Flat Rate Shipping

I'm setting up a site that uses, for most items, the Rate Table shipping. I've got that set up - that was the easy part.

But, there is one 'item' that has to ship in two boxes, so there needs to be some extra shipping cost for this item. Based on the total weight of the two boxes, the shipping would be $15 (as set in the Rate Table). But, I need to set the shipping for this one item at $20, because of the extra costs for two boxes.

I need suggestions and help on the best way to set this up.

John

The easiest way I know of would be to add $5 to the cost, and explain in the description that because of the size of the item, the price includes an extra $5 shipping charge.

I do not know of a way to do what you are asking through the shipping modules.

You could add an additional shipping cost by testing how many of the specific products_id is in the cart ...

In the function quote area of the shipping module, you could test for how many of the specific products_id are in the cart to add an additional charge ...

Example, if the products_id is 27 and you want an additional $5.00 per quantity:
global $cart;
$extra_shipping = $_SESSION['cart']->in_cart_check('products_id', 27) * 5.00;

Now add that to cost ...