Sea World GC Single Day Ticket

Hi
Does anyone know a way to get a discounted single day ticket to Sea World Gold Coast? All the legit looking discounts I can find are for the multi park\day passes.
I've had a good look on here and OzBargain, the only thing I can find is tickets on Changi Recommends for about $105 (NZD) for an adult, but the site says "E-tickets are for international visitors only and cannot be purchased in Australia/New Zealand or by Australia/New Zealand passport holders" - I wonder if anyone has ignored that, suppose I should ask on OzBargians?
I also found tickets for $95 NZD on kkday but that looks dodgy and has very mixed reviews. It looks similar to Changi Recommends, both say the tickets are valid until 31 March 2023.

We are going over in Febuary. When I checked ticket prices in October they were $99 AUD ($105 NZD) for an adult and $89 for a child, now they are $119 ($126 NZD) and $109 ($115 NZD), and that's the $10 cheaper online price. I'm annoyed I didn't buy them earlier since they are valid for 12 months. I've booked at Sea World Resort but booked the breakfast package cos it worked out cheaper overall to add the tickets on, rather than the breakfast (we love a hotel buffet breakfast :D ). I emailed them a few weeks ago asking about adding on tickets, just remembered I didn't get a reply so have asked again.
Cheers