I am monitoring price for Tuya Wifi Natural Gas Sensor and it is for $25.29 now (in Banggood). Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Tuya Wifi Natural Gas Sensor EU Combustible Household Smart LPG Gas Alarm Detector Leakage Sensor Fire Safety Smart Home
Banggood ($25.29)
Banggood warehouse is located in China. There are no active coupons for this product, but the price is pretty low isn’t it? What about the price? Well, this price is higher than average price ($17.49)
Link: Banggood product page
Price: $25.29
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG589b2e
(there’s a little possibility that old coupon will work)
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
Do you need price history chart (for all/most countries) for Tuya Wifi Natural Gas Sensor? There we go.
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)).