When I was updating this page the price was $37.19 for 12V Mini Spot Welding Machine (in Banggood). Basically copy coupon, view price history or create e-mail price alert. What is best price?
Latest coupon code price check (UTC time):
Model Number: Relay Spot Welder, Material: metal+PC+ABS, Package size: about 15x10cm/5.91×3.94in, Is Smart Device: NO, Origin: Mainland China, Applicable battery:
Banggood ($37.19)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. But wait a sec… Is it a good price? From what I can see this price is higher than average price ($32.91).
Link: Banggood product page
Price: $37.19
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG086eb3, BG20236Tool, BGET10
(I don’t think these’re gonna work, but you can try ’em out anyway)
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 12V Mini Spot Welding Machine.
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)).