Just created an account to have a play around.
Auckland to Brisbane 1st April via Jetstar (carry-on) = $73.39 after discount ($223.39 - $150)
Easter Flight Sale Terms & Conditions: Offer valid from 09:00 10 February 2025 - 23:59 13 February 2025 (NZDT), unless sold out prior, and is valid for international one-way or return flight bookings, departing from New Zealand only. Enter the coupon code HOPAWAY at checkout for $150 OFF your eligible flight booking. Coupon code offer is only available to logged in Webjet Members. Coupon code is valid only for qualifying purchases made on the site. Your $150 code HOPAWAY can be redeemed at https://www.webjet.co.nz/ and through the App. Only one coupon code can be used at any time and cannot be used in conjunction with any other offers. Offer applies to any available airline and is valid for departures from 1 April 2025 - 30 April 2025. Discount will apply per booking, not per passenger. Offer excludes multi-city flight bookings, hotel, car and motorhome bookings, Travel Insurance, Things To Do Tours and Activities, and is not applicable to any other destination. Offer can be withdrawn or amended at any time without notice. Read our full Flight Coupon Code Terms & Conditions. Read our full Package Coupon Code Terms & Conditions. Webjet's Standard Booking Terms & Conditions apply.
Not clear if same member can use again for a second booking for one-way to get home?
I couldn’t find an exclusion but seems too good?