Xiaomi MRB23 Updated Smart Mi Water Purifier (Banggood, Aliexpress: Rated Voltage 220V, Applicable Water Temperature 5~38℃, Brand Xiaomi, Weight about 8.1Kg, Rated Power 42W, Applicable Environment 4~40℃, Size(L X W X H) 471 X 170 X 452mm, Rated Anti-Pollution capacity: 2500L, Working Pressure 0.4~0.9MPa, Inlet Pressure 0.1~0.4MPa, Rated Frequency 50Hz, Model MRB23 (the best price with coupon)).
Just check coupons out (with price alert and history). Do you want to know what the best price is?
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 and price update (UTC):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($290.99): 7bcdf9
paste coupon code in your cart and click Apply 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): BGfaucet, AFfbG10, 502C6B, BGmiwater, BG5258, BG7589, BG7960, BGFG45, bGhOnEy10, BGYJ001, bgshOOp10, BGHWDEALS888, BgoFErTaSchInA10, BGHALLOWEEN, BgcLuBofErtA10, BGCuponation10
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for Xiaomi MRB23 Updated Smart Mi Water Purifier is here. The lowest price was: $188.88.
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)).