I currently have have an form with a subform to manage a transaction. I have a button that calculates the total price of the order for all items purchased. (picture in attachment).

I am wondering whether it would be possible to add in a discount for 5 of any items (e.g 3 or item 1 and 2 of item 2); or whether having a discount for 5 of item 1 and 5 of item 2 would be easier to code.

The code that i currently have to...