Aliexpress
Click here… to search for Xiaoda Z Smart Induction Faucet 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 (14.99 USD): BG1499ct1
Coupon (23.80 USD): BGss8%hl
(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): vipupgrade8, 1899ZS, d8f2bb, cc2ddd, TTxBG10, 2133CPO, BGFW16, BGzanjia15
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Xiaoda Z Smart Induction Faucet.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).