I have just checked coupons. The lowest price I could get is $44 for Tuya WiFi Weather Station (in Banggood). Price history, coupons and price alert are available on this page. What is best price?
Tuya WiFi Weather Station Color Screen Indoor Outdoor Temperature Humidity Monitor Multifunctional Weather Alarm Clock Real-Time Weather Updates Smart Home Device – EU Plug
Latest coupon and price update (UTC):
Banggood ($44.00)
Banggood warehouse is located in China. Is it good price? Current price is the lowest in history (according to CouponsFromChina database)! You can get coupon down below.
Link: Banggood product page
Price without coupon: $49.99
1. ($44.00): BGRSPETTYSS
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 and https://couponsfromchina.com/short/5cd
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 Tuya WiFi Weather Station.
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)).