Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (25.47 USD): Cuponation9
Coupon (25.75 USD): BG8ReviTrage
Coupon (26.31 USD): BG00c906
(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): BGOCFO028, BGNOSE028, BGDEAL028, BGISNO028, BGDEFR028, BGJATD028, BGDEFO028, BGAFF10OFF, BGCuponation10, 13f142, BGAPTD028, BGHONEY2110, BG10OFFAFF, BGWEEKAMY028, BGMAYFO028, BGwhielabel, BGTD028, BGZXJU028, BGLYFO028, BGSP028, BGPA028, BGAlerabat1, Terence, BG17d797, Tabby20, 2203ActiesNL, BG1efeb0, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BGJUNEGSG9
(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 HUOHOU Kitchen Slicer is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).