Calculate multiple shipping classes at checkout

Hi there,

At my webshop http://www.50-studios.nl, I’m using different shipping costs per product. But at the checkout page I want to calculate these different shipping costs. So:

Product A = € 2,50 shipping costs, Product B = € 6,00 shipping costs

At the checkout of buying these two products I want the total shipping costs to be 8,50. How is this possible?

Thanks in advance!!

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