^Kogan Mobile cheapest prepay claim is correct as of 02/07/2021 based on all unlimited minutes prepay plans compared on Glimp here.

$5 Starter Pack is valid for new Kogan Mobile customers only. Ongoing price after 30 days is $35. Plan auto-renews by default to LARGE 30 Day Prepay Plan and can be cancelled at any time via your Kogan Mobile account. Personal use only. Offer is available on Kogan Mobile $5 Starter Pack purchased before 11:59pm NZDT 01/02/2022 unless sold out prior. Vouchers expire at 11:59pm NZDT on 15/02/2022. Discount does not apply to subsequent renewals. Not available for commercial or resale purposes. Discount cannot be used in conjunction with any other promotional offers. Not transferable and not redeemable for cash. 

*Unlimited refers to calls and texts to standard New Zealand and Australian numbers, landlines and mobiles, placed while in New Zealand. Personal Use only. All Kogan Mobile Plans are prepay. The full amount of each Plan must be paid upon activation, renewal or purchase of a voucher. A Kogan Mobile SIM card must be purchased before a Prepay Plan can be activated. SIM delivery takes up to 14 working days, after which you can activate your Plan. MMS is included to standard New Zealand mobile numbers. Calls, SMS & MMS to non-Australian international numbers, special or premium numbers (eg. 0900, 018) data calls and usage, video calling and roaming services are not included. Additional add-on packs must be purchased separately in order to use premium services like roaming and international calls.

1.Savings are based on the money saved by prepaying for a 365 Kogan Mobile voucher compared with paying 365 days of the equivalent 30 day plan’s standard Kogan Mobile pricing.

2.Data sessions are rounded to the nearest KB. Once data inclusion is exhausted, you will need to purchase a data pack or renew to continue using data. Unused data expires on next renewal, the beginning of the next 30 day block or expiry date of the renewal, whichever is earlier. For 30 Days Plan: data expires after 30 days or upon next renewal, whichever occurs first. If Data Per 30 Days is exhausted before 30 days has elapsed, access to data will cease until the beginning of the next data 30 day block (if any), or the customer renews or purchases a data pack. For 365 Days Plan: comes with 18GB (SMALL 365 DAYS plan) 48GB (MEDIUM 365 DAYS Plan)  or 180GB (LARGE 365 DAYS Plan) Total Data, in each case split into 30 day blocks as per prepay plan table from days 1 – 360. From days 361 – 365, 1.5GB (SMALL 365 DAYS Plan), 4GB (MEDIUM 365 DAYS Plan) or 15GB (LARGE 365 DAYS Plan) will be added to the account. 1GB = 1024MB. If Data Per 30 Days amount is exhausted before 30 days has elapsed, access to data will cease until the beginning of the next 30 day block (if any), or the customer renews or purchases a data pack. T&Cs apply.