Right now the shipping with respect to the first bag is $5.00 and when ordering more than 1 bag the shipping for the additional bags are based upon $3 per bag. If you order one bag shipping = $5, shipping for two bags = $8.00, shipping for three bags = $11 and so on. However, how do you change this to the following shipping charges:



1 bag = $5.00

2 bags = $8.00

3 bags = $10.00

4 bags = $11.00

5 bags or more = $0.00



In other words I want to promote free shipping charges if one orders 5 pounds (5 bags) or more.