$834.99 at PB Tech. Lowest price in New Zealand all-time seems to be $800 (PriceSpy/PriceMe)
$640.66 + $24.79 shipped (to Hamilton) + $99.81 = $765.26. In stock August 3rd 2020. Current price at 12:33PM, 28/7/2020
You can also go through B&H for $680 shipped, but you do so at your own risk with their lack of Tax/GST charge. Item comes with: 'AMD Ryzen 2020 Bundle - Assassin's Creed Valhalla' through B&H. US$10 difference between Amazon and B&H.
Edit The $419.99 option may be hiding in 'New & Used'. Shipped by 'shopping solutions.LLC'.