title: Magento - Wrong price for custom options
body: <p>This has been a real pain: Instead of using configurable products for our more complex products, we went ahead and used custom options instead.</p>
  
  <p>However the prices displayed in the frontend are wrong. To be more exact, the correct price is shown in the select list, but when selected, the wrong price is added to the cart and also wrongly updated in the product view. </p>
  
  <p>The weird thing is, that the price added to the products base price is always 2 times higher than expected.</p>
  
  <p>Any idea what is going on here? Any help would be greatly appreciated!</p>