Here's another VPN provider to choose from beside the usual 90% Cashback from NordVPN and SurfSharks.
From a quick Google Search
CyberGhost is better according to Pixel Privacy
Not sure if the price is inclusive or exclusive of GST and what conversion rate is used for cashback tracking but probably should comes to less than $20 for 38 months
Cashback is eligible for new CyberGhost customers only.
Cashback may be ineligible if a coupon code is used that is not listed on this site.
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 AUD 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.