Aliexpress
Click here… to search for Pipe 1000W 20-63mm Plastic Welding Tool on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
Coupon (58.09 USD): BGGines
(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): BG6d2f05, BGTools8, BG490c0a, BG9a0a24
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Price history (for all/most countries) for Pipe 1000W 20-63mm Plastic Welding Tool is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).