$1420 before discount is already cheaper than most majors. Free delivery is available to most metro areas, otherwise postage is $104.
If delivery kills the deal for you, Betta Electrical ebay is $1436 before 10% off, and is flat $49 postage - https://www.ebay.com.au/itm/Panasonic-4K-Uhd-Smart-Led-Telev…
If you don't want to buy on ebay, Harvey Norman is $1436 with 10% back in gift cards (promo ends today) - https://www.harveynorman.com.au/panasonic-65-ex600a-4k-ultra…
Link to model on Panasonic website - https://www.panasonic.com/au/consumer/televisions/ultra-hd-t…
Original 10% off Sitewide with $75 Minimum Spend @ eBay Deal Post
https://youtu.be/guck4FoWQss