Amazon link - https://www.amazon.com.au/Lenovo-GY50X79385-M600-Gaming-Mous…
Dropped from $40 to $30.
M300 & M500 are also available at $20 and $30, respectively.
M600 is priced at $149 on the official Lenovo Australia website but it's already out of stock. Its sting ray (white) version is still available but in low stock at $76 with a coupon [EOFY]. https://www.lenovo.com/au/en/accessories-and-monitors/keyboa…
Overall, I think it's a steal.
Thanks OP! Don't really need it but it is such a good price and might be a little better than my old logitech gaming mouse.