I have just checked coupons. The lowest price I could get is $20.69 for JCD 908S 220V 80W LCD Soldering Iron Kit (in Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Voltage: AC220-240V OR AC100-130V, Soldering Iron Weight: Approx.96g/3.4oz, Temperature Range: 180~500℃/356~932℉, Temperature Stability: ±5℃, Soldering Iron Size: Approx.242x 25x 25mm/9.6x 0.98x 0.98in, Package Weight: Approx. 139g / 4.9oz, Power: 80W, Soldering Iron Tips: 900M-B1.2, Heating Type: Wmore Ceramics Element, Package Size: Approx. 254x 55x 35mm/10x 2.2x 1.4n, Frequency: 50Hz/60Hz, Wire Length: 1.4m / 55.12in
Banggood ($20.69)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Is it a low price? This price is higher than average price ($12.53) for this item.
Link: Banggood product page
Price: $20.69
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BANGGOODSD, BG8a7644, 00c906, BG00c906, CityadsTool, BGPTL088, BGGines
(probably won’t work, but you can try them out)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for JCD 908S 220V 80W LCD Soldering Iron Kit is here.
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)).