As per title buy one get one free offer from Kogan Mobile.
Kogan Mobile Prepaid Voucher Code: LARGE (365 Days FLEX | 250GB) - Buy One Get One Free $265
Kogan Mobile Prepaid Voucher Code: EXTRA LARGE (365 Days FLEX | 486GB) - Buy One Get One Free $355
Voucher expires at 11:59pm AEDT on 15/01/2021. Activation must be made before the voucher expiry date. Voucher does not apply to subsequent recharges. Voucher cannot be used in conjunction with any other vouchers or promotional offers.