Below are some simple examples of InterGateway (NMI) payments:
Simple Pay Button
Quickclick Fixed Price Button will redirect to the gateway requesting payment for a fixed $10.00 amount
Open Payment Amount
Quickclick Donation Button to allow customer to enter a payment amount prior to directing to gateway (uses donation button)
Blue product $9.99
Red Product $19.99
Add to Cart Simple Shopping Cart
Ability to add multiple products showing quantity here is optional
Check Out
Collect Checkout Method
One Button to finalise shopping, this best used with a script to customise the products and amounts added prior to the creation of the button form. This sometimes used in a popup overlay on a shopping cart