Add price to packing slip

The line item price is not a variable accessible in the packing slip line_item_shipments.

https://help.shopify.com/en/manual/fulfillment/managing-orders/printing-orders/packing-slips/variable-reference#line-items-in-shipment-variables

There is a way to access the price by looping through the order:

{% assign final_price = nil %}
{% for item in order.line_items %}
{% if item.sku == line_item.sku %}
{% assign final_price = item.final_price %}
{% endif %}
{% endfor %}
{% if final_price %}
{{ final_price | money }}
{% endif %}