You can get Mouehouse Wi-Fi Smart Light Switch for $8.99 with coupon (from Banggood). Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Mouehouse Wi-Fi Smart Light Switch Timer Smart Life APP Wireless Remote Control Works with Alexa Google Home
Latest coupon code price check (UTC time):
Banggood ($8.99)
Banggood warehouse is located in China. There are no coupons available at this moment in Banggood. You probably want to know if this is a good price. Hmmm, price is higher than average (which is $7.99 right now), so better set price alert down below…
Link: Banggood product page
Price: $8.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for Mouehouse Wi-Fi Smart Light Switch is here.
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)).