Latest update shows that XH-W3001 10A 12V 24V 220V Temperature Controller costs 5.98 USD (in Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Latest coupon and price update (UTC):
Banggood (5.98 USD)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). Good or bad price? Hmmm, price is higher than average (which is 4.49 USD right now), so better set price alert down below…
Link: Banggood product page
Price: 5.98 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG00c906, BG589b2e
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
Click here… to search for XH-W3001 10A 12V 24V 220V Temperature Controller on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for XH-W3001 10A 12V 24V 220V Temperature Controller.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).