Aliexpress
Click here… to search for Xiaomi Zhirui Philips Smart E27 6.5W LED Bulb on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Coupon (19.35 USD): BGLIG12
(CouponsFromChina.com tip: this code has to be applied in your 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): YZM897, TTxBG10, bgssaff9, AFfbG10, BGZHRURE, aff7off, 502C6B, BGYEE11COU, 13f142, BGLIGHT2020, BGSS10%SW, BGdragonBoat, bGhOnEy10, bgshOOp10, BGLIGHT0920, BgoFErTaSchInA10, BGELIG0920, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10, BG10OFFAFF, BGwhielabel
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Zhirui Philips Smart E27 6.5W LED Bulb.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).