$10.99 – Tuya bluetooth Smart LCD Screen Digital Thermometer Temperature Humidity Sensor Moisture Meter App Remote Control.
I have just checked coupons. The lowest price I could get is $10.99 for Tuya Bluetooth Smart Thermometer Humidity Sensor (in Banggood). Just check coupons out (with price alert and history). What is the best price?
Latest price update (UTC time):
Banggood ($10.99)
Banggood warehouse is located in China. There are no coupons for this product in Banggood. What about the price? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $9.66)
Link: Banggood product page
Price: $10.99
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG5b59df
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
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 Tuya Bluetooth Smart Thermometer Humidity Sensor. 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)).