Can I pull the "pre_tax_price" field of the line items?

Yes, you certainly can!

However, since this field only applies to a small number of Shopify Plus users and not a documented field in the Shopify API, you won't see the field in the Fields section.

To pull this value, simply reference {{ line_items.pre_tax_price }} in the Custom Fields section in the Data Settings as shown in the screenshot below:

EZ Exporter - Lineitem pre_tax_price field in Shopify

App: EZ Exporter

Tags: fields, advanced features