Aliexpress
Click here… to search for Automatic Electric Vacuum Sealer on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (25.99 USD): PICODICOM
Coupon (25.99 USD): aff7off
(CouponsFromChina.com tip: apply code in your basket (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): cd1d5f, 2133CPO, 2019SPEDM, bgssaff9, BGaDmITAd, BGATFV, 502C6B, BGEVS, BGVCSFD
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for Automatic Electric Vacuum Sealer.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).