Latest update shows that Home Infrared PIR Keyhole Light costs $9.99 (in Banggood). Just check coupons out (with price alert and history). What is the best price?
Function: Light Sensor+Motion Sensor, Light Color: White Light, Working Temperature: -5℃~+38℃, Size: 81*46*30mm, Shell Color: White/ Silver (Optional), Power Supply: 1pc 1.5V AA Battery (Not Included), Sensing Range: 3m 120°, Light Source: 4pcs LED
Latest price update (UTC time):
Banggood ($9.99)
Banggood warehouse is located in China. Too bad there’s no coupon right now in Banggood. Is it expensive? This price is higher than average price ($6.21) for this item.
Link: Banggood product page
Price: $9.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG589b2e
(these coupons are old, so probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
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 Home Infrared PIR Keyhole Light.
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)).