title: WooCommerce Custom price formula
body: <p>I am trying to create a custom formula for my woocommerce website. The site is a gold website and price of gold changes daily and there is a specific making charge for each item. What i am looking for is i can update the gold rate everyday and the price of all products is updated which will be a sum of the weight*gold rate + making charges.</p>
  
  <p>Any idea how will this be achieve ?</p>
  
  <p>Thanks</p>