Xiaomi has announced the Gaming Mouse Lite, a budget gaming mouse with RGB lighting. The Gaming Mouse Lite also has a Pixart 3327 optical sensor, five DPI presets and a 1,000 Hz polling rate, all for CNY 129 (~US$20).
https://www.notebookcheck.net/Xiaomi-Gaming-Mouse-Lite-launches-with-a-Pixart-3327-optical-sensor-with-DPI-adjustments-at-a-bargain-price.592842.0.html