$26.99 – Tuya WiFi ZigBee Smart Thermostat (Banggood, Aliexpress: Tuya WiFi ZigBe Smart Thermostat Low Power Battery Water Gas Boiler Temperature Controller Work with Alexa Google Home – ZigBee (the best price with coupon)).
When I was updating this page, then coupon price was $26.99 for Tuya WiFi ZigBee Smart Thermostat (in Banggood). Go down and check coupons out. Remember to check price history if it is available. What is the best price?
Latest coupon and price update (UTC):
Banggood ($26.99)
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. Is it a low price? From what I can see this price is higher than average price ($25.99).
Link: Banggood product page
Price: $26.99
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
Do you need price history chart (for all/most countries) for Tuya WiFi ZigBee Smart Thermostat? There we go. The lowest price was: $24.99.
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)).