Price drop since the $68.77 deal and sold by Amazon AU, not a third party seller.
Alternatively you can purchase it from AZ eShop for $63.99 to save $1.01, still fulfilled by Amazon AU.
Previous deals for comparison/discussion.
Razer Basilisk X HyperSpeed Wireless Ergonomic Gaming Mouse is a dual-mode wireless gaming mouse. Engineered with 99.4 percent tracking accuracy and up to 16,000 DPI, the sensor in this wireless mouse offers the precision and speed you need to stay at the top of the leaderboard. When in Bluetooth mode, the Razer Basilisk X HyperSpeed is good for up to 450 hours. For gaming, using its Razer HyperSpeed Wireless lets you tap on its ultra-fast performance for up to 285 hours. Fully configurable via Razer Synapse 3, the 6 programmable buttons let you access macros and secondary functions so you can execute extended moves with ease.
Edit: Also $65 at Microsoft or their eBay store. Thanks to AFM7.
Edit 26/5: Down to $63.81 from $65
Edit 28/5: Down to $61.76 from $63.81
Edit 31/5: Down to $59.98 from $61.76
Edit 1/6: Down to $57.81 from $59.98
Edit 1/6 2pm: Down to $57.78 from $57.81
Edit 2/6: Up to $59.69 from $57.78
Edit 3/6: Up to $60.93 from $59.69
Edit 16/6: Up to $61.49 from $60.93
Ive been considering this… im sick of recharging my logitech via microUSB, and its about 5ms faster in click response according to rtings.
Very tempted.