Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
Constant Temperature: 55℃, Color: White/Black/Green, Power: 18W, Frequency: 50Hz, Product Size: 11.50x 11.50x 2.00 cm, Gear Adjustment: 2gear, Voltage: 110V/220V, Package Weight: 0.35kg
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I don’t really know if this price is reasonable, coz there’s no price history in my DB. Well, there is one coupon available right now.
Link: Banggood product page
1. ($18.79): BG589b2e
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): BG10OFFAFF1, BG1dcb9f, 6GSGIT, BG00c906, ADMITAD2212, 2022ACTIESNL, pROMo8cuPoN, Cuponation9, BGeaf456
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history is not available for this item (not enough database records)! The lowest price was $3.99 though.
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)).