$25.29 – Product Name: Aqara Smart Zigbe Switch Key, Working Humidity: 0 – 95% RH, Working Temperature: -10 – 60 Deg.C, Control Type: One Key Control, Power source: Built-in 1pc CR2032 cell battery, Compatible App: “Mi Home” on Apple Store or Google Play, Wireless Connection: ZigBe.
When I was updating this page, then coupon price was $25.29 for Aqara Smart Zigbee Switch Key (in Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Latest coupon and price update (UTC):
Banggood ($25.29)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). But wait a sec… Is it a good price? This price is higher than average price ($22.14) for this item.
Link: Banggood product page
Price: $25.29
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for Aqara Smart Zigbee Switch Key? There we go. The lowest price was: $18.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).