$9.99 – Indoor Temperature Humidity Meter (Banggood, Aliexpress: High-Precision Lcd Electronic Digital Display Indoor Temperature And Humidity Meter Multi-Functional Household (the best price with coupon)).
You can get Indoor Temperature Humidity Meter for $9.99 using coupon code (in Banggood). Check coupons or create price alert down below. You probably want to know what is the best price?
Latest price update (UTC time):
Banggood ($9.99)
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood. Well, is it a good price anyway? Hmmm, price is higher than average (which is $9.49 right now), so better set price alert down below…
Link: Banggood product page
Price: $9.99
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
Here is price history (for all/most countries) for Indoor Temperature Humidity Meter. The lowest price was: $8.99.
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)).