Quantity Discount on Freights?

[JorgeR]

Hi,

I'm using the Quantity Discount add-on and the perweightunit shipping module. I´d like also offer the discount on the freight. Any suggestions?

This is what I want to do:

From 0-2 items - No Discount
From 3-5 - 5% Discount
6 or More - 10 % Discount

If the weight of the shipping is:
From 0 to 79 lbs. - No discount
From 80 to 249 lbs. - 5% Discount
From 250 or more - 10 % Discount

So, If they place an order of 4 items of $500 each and the weight is 81 lbs the discount will be like this:

4 x $500 = $2,000
Discount = $200 : 5%(per items) + 5% (discount per weight)


Thanks,


Jorge