You can create price alert here, copy coupons and view price history. Best price?
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):
Temperature Precision 0.5 Degree Celsius, Color Black, Measurable Light Intensity 100000 LUX, Light Precision 100 LUX, Size 2.5x 13.2cm/0.98x 5.19”, Battery CR2032 Button Battery (Included), Waterproof Level IP5
Banggood
Banggood warehouse is located in China. I don’t really know if this price is reasonable, coz there’s no price history in my DB. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($9.99): BGCNJCY1
put item in your cart and apply coupon code there 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
Price history and price alert
Well, you won’t see price history chart, coz we have only 1 database record for this item (and price was $9.99).
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)).