Hi @TomT,
Thanks for sharing this information with the Klaviyo Community.
Your best bet is to preview the event variables for the WooCommerce event in question to see if the event data contains the shipping price. If not, I’m afraid we cannot modify the event data contained in that event to include the shipping rate.
As an alternative solution, you can send us a custom event using the Track API including the shipping rate amount in the event data. If you decide to pursue this solution, I recommend using our API reference guide for assistance. If you’d like further assistance with this solution beyond the documentation, I recommend looking into finding a Klaviyo partner, you can find more details on this process and the benefits of pursuing a Klaviyo partner in the post below:
https://community.klaviyo.com/job-board-55/tips-for-hiring-a-klaviyo-partner-770
Thanks and have a great rest of your day!