The coupon price for Xiaomi HIMO 4.5mm Bike is 18.99 USD (in Banggood). You can create price alert here, copy coupons and view price history. Best price?
Latest coupon code price check (UTC time):
Banggood (18.99 USD)
Banggood warehouse is located in China. Low/high price? Hmmm, price is higher than average (which is 17.46 USD right now), so better set price alert down below… I am tired of searching coupons, but I found one for you…
Link: Banggood product page
Price without coupon: 20.99 USD
Coupon (18.99 USD): BGTYAP057
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): BGEBIKEA, 0e7f33, FBCOUPON1, e34d13, 347870, BGAFF10OFF, BGCuponation10, 13f142, BGHONEY2110, BG10OFFAFF, BGwhielabel, BGBICYCLES, BG4d9120
(you can check these old coupons out, but these probably won’t work)
Aliexpress
Click here… to search for Xiaomi HIMO 4.5mm Bike Steel Cable Lock on Aliexpress
Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi HIMO 4.5mm Bike Steel Cable Lock.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).