Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Power supply USB 5V, CO2 detection range Temperature 5-35°C / 400-2000ppm, Detection range of HCOC Temperature 5-35°C / 0~9.999mg/m3, Temperature detection range -10~50°C, Item weight 74g / 2.6ounce, Connection mode Bluetooth4.0, TVOC detection range Temperature 5-35°C / 0~9.999mg/m3, Item size 75 * 75 * 50mm / 3.0 * 3.0 * 2.0in
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($18.05): MVC8SPRING
2. ($18.44): BG00c906
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGJAFR996, BGJAXIN996, BGAFF10OFF, BGJATD996, BGDEALJA996, BGFEFO996, BGMRDC31, 13f142, BGAPSE996, BGAPFO996, BGJUFO996, BG10OFFAFF1, 00c906, BGAlerabat1
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for Smart USB Bluetooth Air Quality Monitor.
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)).