According to my DB the lowest price is $59.99 for UNI-T UT332+ Digital Thermometer Hygrometer (in Banggood). Just check coupons out (with price alert and history). Best price?
UNI-T UT331+ UT332+ Digital Thermometer Hygrometer Temperature Humidity Measuring Instruments For Food High Precision – UT332+
Latest coupon code price check (UTC time):
Banggood ($59.99)
Banggood warehouse is located in China. CouponsFromChina software could not find any coupon for this product in Banggood. Low/high price? Pretty sweet, this is the lowest price I have ever noted for this product!
Link: Banggood product page
Price: $59.99
This is the best price ever noted in my database!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGM1TOOLS88, BGMARCHSALE, BG20236Tool, BGTOOS729, BG8FORMULAMX, BGBFDAY8, BGNEWYEAR8, BGSPRING8OFF, BGHONEYSP
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – UNI-T UT331+ Digital Thermometer Hygrometer ($-3)
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
Check out price history chart (for all/most countries) for UNI-T UT332+ Digital Thermometer Hygrometer.
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)).