Xiaomi HUOHOU A1609 6.7 Inch Kitchen Cutter Knife (Banggood, Aliexpress: Blade Material 50Cr15Mov, Model A1609, Size 6.7 Inch / 164mm, Weight 500g, Handle Material 10Cr17, Color Silver (the best price with coupon)).
You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
1. ($24.29): BGAFF10OFF
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): TTxBG10, BG2155KK, aff7off, bgssaff9, AFfbG10, BG21KKH, BGBFAFF2019, BGCITYADS2019, BGTD525, BGHOMEG12, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BGHome15%, BGHOMEA15%, BGNOFR731, BGHUOHOU731
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi HUOHOU A1609 6.7 Inch Kitchen Cutter Knife. The lowest price was: $20.59.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).