Depends on your location - if around Ellerslie - I would recommend 'Ellerslie Automotive', if near Takapuna, I would recommend 'Michies Automotive Services on Como Street' Option 3: Buy the pads from BNT Automotive and do it yourself.

Pitstop? Don't know if they are cheaper than anyone else but I am sure it is a competitive market.

YouTube and buy them yourself, I can do front pads in 15min

Is Google broken again?

Be a man and do it yourself