Ends 1/21. Rakuten.com with Lenovo has the Lenovo Legion M500 RGB Gaming Mouse for $35 with free shipping. Get 20% back or 680 points Rakuten Super Points ($6.80 store credit). Points expire within 12 months unless you earn more points during that period.

Features up to 16,000 DPI, 3 RGB color LED zones and removable 10g weight cartridge.