Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Coupon (1039.21 USD): BGSPRING8OFF
(CouponsFromChina.com tip: this code has to be applied 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): BG1e9d9d, BGGines, CityadsTool, BGLQHC12, BGMFD8, BGPTL088, BGLQHC13, BGLQHC14, BG589b2e, BGCAPITALOS8, BG8FORMULAMX, BGBFDAY8, BGNEWYEAR8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Price history (for all/most countries) for AI-9 SM&MM Automatic FTTH Fiber Optic Splicing Machine is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).