Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Aqara OPPLE WXCJKG11LM Smart Switch Double Button (-3 USD)
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Coupon (16.83 USD): BGdragonBoat
(CouponsFromChina.com tip: apply code in your basket (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): bgaqraled, BGCITYADS2019, AFfbG10, BGVDay10%off, BGLIGHT2020, BGAQA15, bGhOnEy10, BGSS10%SW, bgshOOp10, BGLIGHT0920, BgoFErTaSchInA10, BGELIG0920, BgcLuBofErtA10
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Aqara OPPLE WXCJKG11LM Smart Switch Double Button (-3 USD)
Price history and price alert
Price history (for all/most countries) for Aqara OPPLE WXCJKG13LM Smart Switch Six Button is here.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).