Promotion is valid from 21 - 22 May 2022.
Valid in-store or online.
Excludes purchases made on Mitre 10 Trade accounts including SmartMate Cash, Charge and National Accounts or Farmlands Card. Excludes the purchase of gift cards, kitchen design deposits, short- and long-term finance (including Afterpay) and order payments. Cannot be used in conjunction with any other bonus Airpoints DollarsTM offer. Bonus Airpoints DollarsTM will be issued within 14 days. AirpointsTM terms and conditions apply.
FYI: normal earn is $1 per $115 (0.87%) and this raises it to $1 per $23 (4.35%).
They pay out fractionally, so the purchase threshold for rewards is 13 cents which I believe will earn a reward rounded up to 0.01 Airpoints.