What is the cheapest option for wireless internet access in New Zealand?

The cheapest option for wireless internet access in New Zealand typically involves choosing a prepaid mobile broadband plan from providers like Spark, Vodafone, or 2degrees. These plans often offer affordable data packages that can be used with a mobile hotspot or USB modem. Additionally, some providers have promotional deals or low-cost plans specifically targeted at light users. It's advisable to compare current offerings and coverage in your area to find the best deal.