2nd Birthday offer.  Offer ends 11:59pm NZST on 23/08/2021.

Buy One 365 Day plan, Get One free (of the same plan).  Includes Kogan Mobile SIM card.

Vouchers expire at 11:59pm NZST on 30/09/2021, therefore only buy if you can use both vouchers before the end of September 2021.

This is a great deal if you're looking to switch two people to Kogan Mobile.  They use the Vodafone network and include 5G access (where available).

Plans include unlimited talk and text to NZ & AU standard numbers.  Includes MMS to NZ mobiles.  Includes calls to voicemail.

Data resets every 30 days.  The 15GB per 30 days plan works out to be $13.75 per person, per month (for two people).  This has got to be the cheapest plan available in NZ (either prepay or postpaid), with the only exception being the Kogan Mobile starter plan at $5 for the first month on the 15GB plan (which then reverts to standard pricing of $35 per 30 days).

The fine print:

~Valid for new and existing Kogan Mobile customers. Personal use only. Offer available on Kogan Mobile Prepay SMALL, MEDIUM and LARGE LARGE 365 Day plans purchased before 11:59pm NZST 23/08/2021 unless sold out prior or extended. Not available for commercial or resale purposes. After purchasing a buy one get one free offer, customers will be sent two 365 day Kogan Mobile vouchers via email for their chosen plan. Vouchers expire at 11:59pm NZST on 30/09/2021. Activation or recharge must be made before the voucher expiry date. Only one voucher can be used per activation or recharge. Vouchers do not stack. Vouchers cannot be used in conjunction with any other promotional offers.