How can I sort the shipping prices?

[reders]

In my online shop, each product has a different shipping price (some £1, others £1.50, £2, or £5 etc).

I have created different shipping prices based on weight, and assigned the weights to the products that match their shipping value. This works well when a user purchases just one product because it assigns the value of the weight to the product.

But if a user purchases two products - as an example, let's say it they buy one product with a £2 shipping cost, and another at £5 - they will be charged for BOTH of them at £7.

I'm wondering if there is a way in Virtuemart to set it so that it charges only for the highest shipping rate of the products being purchased? So in the previous example the customer would be charged £5 instead of £7.

Is this at all possible?

Many thanks.