$24.09 – Aqara P1 Zigbee 3.0 Door Window Sensor (Banggood, Aliexpress: Aqara P1 Zigbe 3.0 Door Window Sensor Smart Home Wireless Anti-theft Induction Door Magnetic Alarm Work with Apple Homekit (the best price with coupon)).
When I was updating this page, then coupon price was $24.09 for Aqara P1 Zigbee 3.0 Door Window Sensor (in Banggood). Price history, coupons and price alert are available on this page. Do you want to know what the best price is?
Latest price update (UTC time):
Banggood ($24.09)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… Well, is it a good price anyway? From what I can see this price is higher than average price ($14.66).
Link: Banggood product page
Price: $24.09
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
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
Check out price history chart (for all/most countries) for Aqara P1 Zigbee 3.0 Door Window Sensor. The lowest price was: $12.99.
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)).