title: Change product price when product attribute has an additional price (WooCommerce)
body: <p>For one of my webshops im trying to achieve the following:
  All of the products in the webshop have variations. 
  For example Product X can be ordered in the color RED but also in the color BLACK.
  Now im trying to set an additional price in WooCommerce for example the color Black.</p>
  
  <p>Color RED - No additional costs
  Color Black- Additional cost €30</p>
  
  <ol>
  <li><p>How can i set this additional cost in WooCommerce? I can only set a total price for a product variation.</p></li>
  <li><p>How can i display these additional costs in the option selectbox?</p></li>
  <li><p>If a user chooses Color Black i want to change the product price (Add up the additional cost to the normal product price)</p></li>
  </ol>
  
  <p>Below you can find what im trying to achieve:
  <a href="https://product-extras.catapultthemes.com/product/macbook/" rel="nofollow noreferrer">https://product-extras.catapultthemes.com/product/macbook/</a></p>
  
  <p>Here you can see the total price changing when you change another option.</p>
  
  <p>Below is the url of my webshop:
  <a href="http://demassagetafel-specialistnl.webhosting.be/winkel/mobiele-massagetafels/ct-kahuna-set-inklapbaar/" rel="nofollow noreferrer">http://demassagetafel-specialistnl.webhosting.be/winkel/mobiele-massagetafels/ct-kahuna-set-inklapbaar/</a></p>