Magento CE 1.9.3 does not update prices on configurable or bundles products properly. The cloned price which is often used is themes is not updated.

<span class="regular-price" id="product-price-161_clone">

The cloned price is hidden on Magento's RWD theme but as it is hidden it, it has little impact.

The price is not updated due to a new file which was added in Magento 1.9.3: app/code/core/Mage/Catalog/Helper/Product/Type/Composite.php

This file removes the _clone value on the idSuffix key from the Product.OptionsPrice JSON object e.g."idSuffix":"_clone". This value is required on line 218 of js/varien/product_options.js to update the cloned price.

$(pair.value+this.duplicateIdSuffix).select('.price')[0].innerHTML = formattedPrice;

This Magento module fixes this issue by using the preferred method of class rewrites for updating this new Magento core file to add the _clone value back in.

• Download latest version here.
• Unzip to Magento root folder.
• Clear cache.
• The price should now update correctly.