Check coupons or create price alert down below. You probably want to know what is the best price?
Power Supply Plug: DC5525, Power: 65W, Input Voltage: 100℃-400℃(MAX), Data/Power Interface: Micro USB, Power Saving Temperature: 200℃(Initial setup), Preset Temperature: 300℃(Initial setup)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
1. ($43.06): BGRCParts8
apply code in your basket (cart) 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): BGFlipskyTS100, BGRCPART, 502C6B, AFfbG10, BGCITYADS2019, BGVDay10%off, BG10PARTS, Parts8, BGCityadsRC8, Tabby20
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for FlipSky Mini TS100 Soldering Iron.
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)).