You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
Working Water Pressure 0.05-0.8MPa, Size 60x34x49mm, Water Efficiency First Level, Sensing Range Side Sensor 0-5cm/Bottom Sensor 0-10cm, Standby Energy Consumption ≤0.2mW, Protection Grade IPX6, Charging Method USB
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I’m not sure about the price, coz I have only 1 record(s) in my database. There is one great coupon!
Link: Banggood product page
1. ($15.99): BGcded3b
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGzjiv, Faucet12, BGzji15, aff7off, BG2646, BG4263, BG3088, BGsmartda, e3b176, GBRMN8464, BG4310, BG4860, BG7960, BGAFF10OFF, BGSM63, bGhOnEy10, BGSD4263, BGYJ001, BGFaucet13, BGMY518, BGFH263, BGBR263, BGRXIAODA, BGCZ263, BG18756, BG11518, BGTapsmartda1, 13f142, BGCuponation10, BGHONEY2110, BANGGOODSD, BG79c2c3, BGe717e6, BGHUPG484
(you can check these old coupons out, but these probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi ZAJIA Automatic Water Saver Tap International ($-3)
Price history and price alert
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: $14.99.
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)).