Just check coupons out (with price alert and history). You probably want to know what is the 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 price update (UTC time):
Input voltage: 220V +/-10%, Operating humidity: < 80%RH, Operating temperature: 32-104 ℉ (0-40 ºC), Storage humidity: < 70%RH, Frequency range: 50- 60Hz, Storage temperature: 32-158 ℉ (0-70 ºC)
Banggood
Banggood warehouse is located in Europe 
. Sorry, but there’s no price history in my database. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($91.34): BG424324
apply it in your cart 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): BG1869, BGeLt15, BgcLuBofErtA10, 7bcdf9, BGAFF10OFF, BGCuponation10, BGHONEY2110, BANGGOODSD, BGCAPITALOS8, BGCOUPERT8, BG8FORMULAMX, BGBFDAY8
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: $72.04.
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)).