Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi Yeelight Simple 90W LED Ceiling Light Pro [EU] (-3 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (339.05 USD): bGhOnEy10
Coupon (339.05 USD): BGYEE20COUPON
Coupon (339.05 USD): BgcLuBofErtA10
(CouponsFromChina.com tip: coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): e2bcea, TTxBG10, 2019SPEDM, bgssaff9, AFfbG10, BGaDmITAd, aff7off, bgchinafest, BGYEE11COU, BGCITYADS2019, Wholesale20, BG9NY, BGVDay10%off, BGLIGHT2020, bgshOOp10, BgoFErTaSchInA10
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi Yeelight Simple 90W LED Ceiling Light Pro [EU] (-3 USD)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Yeelight Simple LED Ceiling Light Pro.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).