$35.99 – that is current price with coupon for FNIRSI 0.25mm Spot Welder (in Banggood). Go down and check coupons out. Remember to check price history if it is available. Best price?
FNIRSI 0.25mm Spot Welder 4 Gears Adjustable DIY Mini Spot Double Pulse Welding Machine 18650 Battery Pack Welding Tool Built-in 5000mAh Battery
Latest coupon code price check (UTC time):
Banggood ($35.99)
Banggood warehouse is located in China. Is it good price? Looks like this is great price. I didn’t track lower than that in CouponsFromChina database ever. We have found one coupon for this product!
Link: Banggood product page
Price without coupon: $38.99
1. ($35.99): BG59c751
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop)
This is the best price ever noted in my database!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG424324, BG84b6d7, BGe245a9, BG2dd9fa
(these coupons are old, so probably won’t work)
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
Check out price history chart (for all/most countries) for FNIRSI 0.25mm Spot Welder.
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)).