Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
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):
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 
. I can’t tell you if this price is good – not enough records in my database, so I won’t judge. Only one coupon available!
Link: Banggood product page
1. ($91.34): BG424324
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
Old coupons (from the oldest to the newest): BG1869, BGeLt15, BgcLuBofErtA10, 7bcdf9, BGAFF10OFF, BGCuponation10, BGHONEY2110, BANGGOODSD, BGCAPITALOS8, BGCOUPERT8, BG8FORMULAMX, BGBFDAY8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
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 $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)).