title: adding price of the products in range
body: <p>I have set up a shop on magento that works fine but my problem is that I want to be able to charge clients based on wight.For example</p>
  
  <p>if someone chooses 6kg there should be a configured price range saying for 4-7 kg then price per kg is 2 hence total price to be 12usd or if someone enter 110.28 kg then there should be a price range defined which states that if the weight is 100-120 kg then each kg is 1.8 usd hence total price is 110.28*1.8 US</p>
  
  <p>That is what i am looking for if there is a way magento can handle that please help me.</p>