In Magento 1.9 I've created configurable product with 2 associated products. In Super product attributes configuration I set-up fixed price difference like for any other configurable product. Later on I created a Custom Option called Gift Wrap (checkbox, fixed price, sku: gift-wrap) for the main configurable product.
When selecting the checkbox in front-end and adding item to the shopping cart the checkout page /checkout/cart/ shows price without custom option! Why Gift Wrap price was not summed with Configurable product price?
