These costs can optionally be added based on the <a target="_blank" href="{bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}s">product shipping class</a>. Learn more about <a target="_blank" href="https://woocommerce.com/document/flat-rate-shipping/#shipping-classes">setting shipping class costs</a>.