Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – DIY Spot Welder 9 Gears 18650 (54.88 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I don’t know if this is a good price – number of records in my database is too low!
Link: Banggood product page
Coupon (39.99 USD): BG3fd745
Coupon (41.64 USD): CityadsTool
(CouponsFromChina.com tip: apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG464337, BGWELDTOOL, BGb4e399, BGANI022, BG8a7644, BG4090b7, BG8dc2f7, BGGines, BGPTL088, BG6d2f05
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – DIY Spot Welder 9 Gears 18650 (54.88 USD)
Price history and price alert
Not enough data to show price history chart… 39.99 USD is the only recorded price. It was not cheaper than that since we have saved it in DB.
You can set price alert (for Banggood).