If you looking at online solutions for a payment gateway then I would take a look at Stripe.com. They offer no ongoing monthly fees, just a per transaction cost of 2.9% + NZ$0.30. This works out to being comparable to most banks fees if not a better option altogether.

We integrate this for all of the e-commerce websites that we create as it’s secure, simple to use and offers a great deal of functionality and different payment options. Easy to set up and can be completed in a couple of hours.

As an FYI we currently have an offer on setting up e-commerce stores, no upfront costs, just a single monthly fee – and that includes connecting to Stipe.com as the credit card payment gateway. See: https://www.friendlyhost.co.nz for more info.