I'm new to Zen Cart and had a question about order totals. I've got everything the way I want it now with charging sales tax based on the order total, etc, but I was wondering if its possible to add a handling or convenience fee based on quantity of products ordered?
That is to say a customer buys 3 widgets. If the handling fee was $1 per widget, his fee would be $3 plus sales tax. If he bought 1 widget, his fee would be $1 plus sales tax. Is this possible?