$45.07 – Tin Lelting Time: <8s, Max Power: 120W, Case Material: Aluminum Alloy, Display: 1.3inch, Battery: 3V, Temperature: 50-480℃, Size: 88x 40x 38mm, Battery： 3V, Controller: STM32 V3.1S.
I have just checked coupons. The lowest price I could get is $45.07 for KSGER Mini STM32 V3.1S OLED T12 Soldering Iron Station (in Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Latest coupon and price update (UTC):
Banggood ($45.07)
Banggood warehouse is located in China. Price? It looks like it’s a good price (lower than average ($47.35)). Only one coupon available!
Link: Banggood product page
Price without coupon: $48.99
1. ($45.07): BGPowerTLS1
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGHONEY2110, BANGGOODSD, BG00c906, BGGines, CityadsTool, BGPTL088, BG6d2f05, BG589b2e, BGSaleFeb8, BGHTT15, BG20236Tool, BGAUGUST8, BGCAPITALOS8, BGCOUPERT8, BG8FORMULAMX, BGCOUPERTBF8, BGPL12MAR8, BGPowerTLS2
(these coupons are old, so probably won’t work)
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
Do you need price history chart (for all/most countries) for KSGER Mini STM32 V3.1S OLED T12 Soldering Iron Station? There we go. The lowest price was: $39.83.
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)).