Shopify API - getting shipping label price vs current approach

I’m looking to get the shipping label price for a fulfilled order. Ideally I’d like to transmit this information with the order/updated or fulfillment/updated webhooks but I can’t find any documentation that says this is possible. I trying a different approach where I’m using the graphql API to extract this info. I used developer tools and inspected the traffic between the Shopify.com website (order page) and https://admin.shopify.com/api/shopify/.

I realize this is a different endpoint than what’s in the docs so I’m not sure if it’s a private API. But, it looks like it ingests Graphql requests like the following (REQUEST). The response has the information I’m looking for.

Question:

Is there a graphql query that I can use to extract the price of the shipping label price that was printed during the fulfillment stage? An ideal solution would be simply using the Shopify webhooks and specifiying additional fields.

REQUEST:

{"operationName":"OrderDetailsCards","variables":{"displayFulfillByFeatures":false,"orderId":"gid://shopify/Order/

Was this ever solved?