Get 1 Airport Lounge Pass Monthly with a Saily Ultra Travel eSIM Plan: e.g. Standard 5GB US$29.99/Month (~NZ$51/Month) @ Saily

Interesting deal from Saily. 1 month minimum (5GB data), can roll over for up to 3 months., more data for higher prices, but lounge pass doesn't change.

List of lounges
There are 3 in New Zealand:

• Queenstown Airport - Manaia Lounge - International Terminal
• Christchurch International Airport - Manaia Lounge - Christchurch - International Terminal Normally $58
• Auckland International Airport - Strata Lounge - International Terminal Normally $69

The QR code provided in the app works via DragonPass, which costs ~$140 one off

Topcashback AU has 25% cashback plus further 5% with code TCBAUS. Or Shopback NZ has 5% cashback.

Credit to bondiben at OzBargain