title: Set Product Price programatically with weight and tax percentage in Magento
body: <p>I have a online jewellery store build with magento. The products are gonna be in gold. Since the gold price needs to be changed daily. we have planned to have a separate section to feed the gold price daily. now i wanna set the price of the any product with the global gold price obtained in the previous section with the weight of the product. There are also some more parameters involved in the price calculation like wastage, making charge, etc., I have planned to have those parameters has custom attributes to this attribute set. </p>
  
  <p>Can any one please suggest be a idea to set the product price calculated with the weight and global gold price</p>
  
  <p>Thanks in Advance.</p>