I created an order form with about 40 products. My problem is that I can't fiugre out how to get a grand total. When I calculate all of the fields that I want in the total, the total will only change after more that 1 item has been ordered. If someone just orders one product, the grand total will stay at $0.
Any help would be appreciated.
I need more details about how your form is designed to have a clue what you're doing.
Anyway, you should check this article by John Brinkman.
I think this is pretty close to your needs.