Applying Freight cost against order invoice

Hello Experts

Is there a way in NetSuite where our payable team can apply freight charges against the invoice, so that on the G/L impact, it will show a lower sales amount (net of freight)? It would work a bit like "landed cost" where we apply freight charge toward certain bills.

Some background info. Sometimes we have sales order that we are charging to the customer that is "freight included". Essentially, we are over inflating our sales and commission because of the "freight included".

Currently, we have been asking our sales rep to add "freight discount" line, and then charge freight. That would essentially offset the freight. Behind the scene, the G/L will show the net amount after the freight discount. This method works. However, some customers prefer price that include freight. Thanks.