Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
Coupon (43.97 USD): bGhOnEy10
(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): DGMLVS1, PICODICOM, bgssaff9, aff7off, BGaDmITAd, bgchinafest, 502C6B, BGBFAFF2019, BGCITYADS2019, BGminleaf, BG322e14, BGHOMEAPP, BGMPB2020
(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 Minleaf ML-VS1 120W Electric Vacuum Sealer is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).