Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Power 2000W, Temperature Regulated Range 60-600℃
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 China.
Link: Banggood product page
1. ($23.55): BGherra
2. ($23.55): BGWELDTOOL
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): BGHeatgun2, AFfbG10, bg2g00d, TS15prime, BGTEP2, TISPrime01, Tools1, BG11VIPD, Tools3, BGminleaf, BGPowerTool15, BG2020NS, BGWM2, BGPTOOL, BGoh22, BGPToo15, BGRUS15, BG0078cf
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for Minleaf ML-HG1 2000W Electric Heater.
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)).