Variable Shipping Cost

Hello @pasqualerose,

Thank you for reaching out!

You can use the flat rate shipping placeholders: https://woocommerce.com/document/flat-rate-shipping/

In your case, it would be 4.50 + ( 1 * [qty] ). :?)

I also want people to be able to buy bulk purchases in multiples of 10. The base shipping for the bulk orders will be $10 and the increase by $5 for each additional 10 books.

The easiest way would be via a variation named 10-pack and assign a custom shipping class for it. You can use the [qty] placeholder here as well.

Please keep in mind that when this variation is ordered, the stock will be reduced by 1 unit, not 10, as WooCommerce will see the entire variation as one product.

If you’d like the stock to reduce by the number of package units automatically, consider installing the Custom Stock Quantity Multiplier for WooCommerce extension.

All extensions sold on WooCommerce.com have a 30-day refund policy. If the product doesn’t work the way you need it or you think another product would work better, we are more than happy to provide a full refund.

Let us know if you have any other questions.

Thank you! I will try that and let you know if I have any further questions.