$14.99 – PD 65W Mini Hot Plate Preheater OLED (Banggood, Aliexpress: PD 65W Mini Hot Plate Preheater OLED Display PCB Board Welding Heating Plate Rework Station Preheating Platform Repair Tool (the best price with coupon)).
The coupon price for PD 65W Mini Hot Plate Preheater OLED is $14.99 (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest price update (UTC time):
Banggood ($14.99)
Banggood warehouse is located in China. Coupons for PD 65W Mini Hot Plate Preheater OLED? Nope, there’re no coupons in Banggood. Is it cheap? Pretty good price – average ($15.42) is higher than current one!
Link: Banggood product page
Price: $14.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG589b2e, BG20236Tool
(you can check these old coupons out, but these probably won’t work)
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
Here is price history (for all/most countries) for PD 65W Mini Hot Plate Preheater OLED. The lowest price was: $12.99.
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)).