The coupon price for Gas Tester is 38.99 USD (in Banggood). Basically copy coupon, view price history or create e-mail price alert. What is best price?
Latest coupon code price check (UTC time):
Banggood (38.99 USD)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. What about the price? Actually this is the best price in history according to CouponsFromChina database!
Link: Banggood product page
Price: 38.99 USD
38.99 USD – This is the best price ever noted in my database!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGGines, BGM1TOOLS88, BG20236Tool, BGTOOS729, BGe75ac3, BG8FORMULAMX
(there’s a little possibility that old coupon will work)
Aliexpress
Click here… to search for MESTEK CGD-02A Digital Gas Tester Sensor on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for MESTEK CGD-02A Digital Gas Tester Sensor.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).