Sony Wireless in-Ear Headphones WI-C310 (White/Black/Blue) US$18 (~NZ$46.52 Delivered) @ Amazon

Currently available at JB Hi-fi for $89.99 and PB Tech for $118.99.
Lowest ever price in New Zealand seems to be $59 back in March of 2020.

Available from Amazon in blue, black or white.

NZD pricing. $27.86 + $12.59 shipping (to Hamilton) + $6.07 GST = $46.52 (Amazon exchange rate: 1 USD = 1.5480335999 NZD)

About this item
Wireless Audio with Bluetooth technology
Up to 15 hours of battery life
9mm driver units for crisp clear sound
Flexible and lightweight cables
Hands-free calling and voice assistant compatible
In The Box USB Type-C Cable (USB-A to USB-C) (approx 20 cm)