Ray, I'm totally lost with this.
I need the original price of the product displayed in the line items, without the surcharge applied.
I need, below a sub-total, to display the surcharge amount and, ideally, to be able to give it a unique title so that the customer knows it's the surcharge (rather than it just saying "Charges").
I need the original price of the product and the surcharge amount as two separate entities so that when it comes to saving to database I can store the original product price and the surcharge amount in two different fields.
Upon removing the RealPrice calculation that you had me add above I note that the cart still does the calculation!? I assume this is because the TotalPrice calculation is still:
[Price] * [Quantity] * (([Category]==2)?1.05:1)
Which begs the question...if RealPrice doesn't affect anything then why did we add it?
I've spent 3 days trying to add this surcharge and, if anything, I'm going backwards with it.