No idea if this is a good deal, i am on AM4 and have not kept up with Intel pricing, it is cheaper than the AU pricing. Cheapest price i found on Staticice is $682 for the K and $632.60 for the KF.
Update: Further price drop from $557.98 originally to $548.53.
About this item
.The processor features Socket LGA-1700 socket for installation on the PCB
.30 MB of L3 cache memory provides excellent hit rate in short access time enabling improved system performance
.10 nm enables improved performance per watt and micro architecture makes it power-efficient
.Intel 7 Architecture enables improved performance per watt and micro architecture makes it power-efficient
Intel Core i9-12900KF Desktop Processor 16 (8P+8E) Cores up to 5.2 GHz Unlocked LGA1700 600 Series Chipset 125W- $555.11
https://www.amazon.com.au/Intel-i9-12900KF-Desktop-Processor…
Intel i5-12600K 3.7GHz 12th Gen 10 Cores Processor $299.08
https://www.amazon.com.au/Intel-i5-12600K-Desktop-Processor-…
Good price, for the price difference would just skip the KF better to have an integrated graphics might need it at some point.