Google Pixel 8 Pro 5G 128GB is on sale for 837 at JB Hi-Fi
Combine that with current offer of $800 off any phone when sign up for the $79 plan.
Maximum voucher repayment is $550
Get $800 off any mobile phone
When you switch your number to JB HI-FI Mobile On a $79 Plan over 24 months
Available to port-in mobile services and new mobile service customers. Offer ends 16/04/25.
Considering what you save upfront with 10% GC or 20x GC, the phone's effective cost is $753 in the current environment. I went through the credit check, then cancelled and paid the termination fees of $550. Your real savings are $200.
IMHO, it would be better to buy this phone outright and save the process for a more recent phone at a pre-order stage.