$14.99 – PD 65W Mini Hot Plate Preheater OLED Display PCB Board Welding Heating Plate Rework Station Preheating Platform Repair Tool.
According to my DB the lowest price is $14.99 for PD 65W Mini Hot Plate Preheater OLED (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Latest coupon and price update (UTC):
Banggood ($14.99)
Banggood warehouse is located in China. Too bad there’s no coupon right now in Banggood. Isn’t it too expensive? 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/i1u
Old coupons (from the oldest to the newest): BG589b2e, BG20236Tool
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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 PD 65W Mini Hot Plate Preheater OLED is here. 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)).