$23.74 – Portable DIY Mini Spot Welder 18650 (Banggood, Aliexpress: Battery: 18650 lithium battery(not included), Material: Metal, Length of welding pen: app.30cm/11.81in, Color: Red+Blue+Black, Quantity: 1Set, Input line length: app.20cm/7.87in (the best price with coupon)).
I have just checked coupons. The lowest price I could get is $23.74 for Portable DIY Mini Spot Welder 18650 (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest coupon and price update (UTC):
Banggood ($23.74)
Banggood warehouse is located in China. I have no active coupons for you right now. But wait a sec… Is it a good price? Well, this price is higher than average price ($19.99)
Link: Banggood product page
Price: $23.74
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGmini111, BGmini222, BGSTUDENT10, BGdiy12, BGGEE13, BGCuponation10, 13f142, BGHONEY2110, BGf13064, BGfeb901, BG90f9ba, BG6d4c2e, BG6af354, BG1efeb0, MVC8SPRING, tRaDetRaCKeR, BG525f34, hoNEYbGdeAlS, BGJUNEGSG9, BG8ReviTrage, Cuponation9, BGcoupon8off, BGGutscheine, BG00c906, BG8OFFCOUPON, TTBLACK5, BG589b2e
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Portable DIY Mini Spot Welder 18650 [EU] ($-3)
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 Portable DIY Mini Spot Welder 18650. The lowest price was: $18.99.
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)).