Is it possible to create custom transaction line field for item's pricing base price?

Here are the specifics:

We are trying to display the base price on sales orders since the unit price pulls in the price level stored on the customer record. So, when the customer is set with a price level set at something other than base price (or left blank), the customer does not see the item's price prior to discounting.

Answer id #22082 provides a way to display it, but it does not work when an item uses multiple units of measure.

We created a custom field following this answer id but the sales order is displaying the purchase unit (inches) of measure price, not the sales unit (feet) of measure price; the base price on the item record is the sale price based on feet. I don't believe this answer id takes in to account multiple units of measure or there is a Netsuite issue.