Removing llSetPayPrice for one item of many?

I'm working on a vending machine and I'm wondering if there is a way to disengage the Fast Pay pop-up when a price is set to 0.

Currently when an item has a price of 0, it inherits the previous item's price.

Any ideas?

Thanks to some help from one of my scripting buddies, I found out how to solve this problem, and figured I would share it in case someone bumps into this issue later.

I was looking in the wrong place for this fix, and rather than shutting off llSetPayPrice, it turns out that the "Pay" option appears when the script is in any state with a money event.

By moving to another state without a money event, and moving some of the code into that state, I was able to 'disengage' the pay option (or at least pull a smoke & mirrors with it.)