Use a VPN like ProtonVPN to connect to the states (I tested with Miami, Florida) to bypass the 15% GST which will save you another ~$15. With currency conversions it's kinda hard to guess as to what the exact price will be, but it'll be roughly between $5-$10 total for the 2 years.
Cashback is eligible for new Surfshark customers only.
Cashback may be ineligible if using codes not listed on Cashrewards.
Cashback is calculated and paid on the advertised cost of the plan only. It will not include any GST, taxes, credit card or PayPal surcharges.
The amount that tracks to your Cashrewards account may differ to the paid amount due to international exchange rates. Your initial payment is converted to USD, then converted back to AUD when reported to us. The advertised cashback rate is based on the reported amount, not the paid amount. Cashrewards has no control over this process.
From OzBargain:
A new customer is defined by Surfshark, and nothing to do with your Cashrewards account. Simply use a new email address at their end, the same Cashrewards account as always, and you're good to go.
Click 'Shop Now' or 'Shop Offer' and buy - don't click to other sites looking for codes etc and certainly don't use any 3rd party plugins. Best to use the Cashrewards mobile app on 4G/5G as this also eliminates any potential issues with WiFi/router firewalls and the like. Tracking for Surfshark typically takes 1-4 hours.
And finally please remember you have the safety net of Surfshark 30-day money back guarantee should tracking fail. All the best :)
Previous discussion: https://www.cheapies.nz/node/30830
I personally have Nord, however the last time I sent one of these deals through to my mates they ended up getting $75.76 AUD back, and testing with Nord on the Surfshark website it's $78.96 AUD, so a good chance it's just shy of $5 NZD