$21.99 – 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.
I have just checked coupons. The lowest price I could get is $21.99 for Portable DIY Mini Spot Welder 18650 (in Banggood). Just check coupons out (with price alert and history). Do you want to know what the best price is?
Latest coupon code price check (UTC time):
Banggood ($21.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. I think you want to know if the price is good. Hmmm, price is higher than average (which is $19.99 right now), so better set price alert down below…
Link: Banggood product page
Price: $21.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGmini111, BGmini222, BGSTUDENT10, BGdiy12, BGGEE13, BGCuponation10, 13f142, BGHONEY2110, BGf13064, BGfeb901, BG90f9ba, BG6d4c2e, BG6af354, BG1efeb0, MVC8SPRING, tRaDetRaCKeR, BG525f34, hoNEYbGdeAlS, BGJUNEGSG9, BG8ReviTrage, Cuponation9, BGcoupon8off, BGGutscheine, BG00c906, BG8OFFCOUPON, TTBLACK5, BG589b2e
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Portable DIY Mini Spot Welder 18650 [EU] ($-3)
Aliexpress
There’re some similar (or not) items on Aliexpress
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 Portable DIY Mini Spot Welder 18650? There we go. 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)).