Aliexpress
Click here… to search for NBC-250 MIG MMA TIG Welding Machine [EU] on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. There’s only 1 record in my database, so I have no idea if the price is OK. Only one coupon available!
Link: Banggood product page
Coupon (272.15 USD): BGGines
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BG6d2f05, BGTools8
(probably won’t work, but you can try them out)
Price history and price alert
Well, you won’t see price history chart, coz we have only 1 database record for this item (and price was 299.99 USD).
You can set price alert (for Banggood).