You can create price alert here, copy coupons and view price history. What is the best price?
Rated Voltage: 14.4V, Water Tank Capacity: 170ml, Mode: CDZB106CN, Battery Capacity: 2500~2600mAh, Mode: BLJ24W200120P-CA, Rated Output: 20V 1.2A, Charging Voltage: 20V, Rated Power: 45W, Charging Time: 4.5h, Battery Type: Li-ion Battery, Rated Input: 20V 1.2A, Mode: B106CN, Adapter: , Rated Output: 20V 1200mA, Rated Voltage: 100-240V, Suction Adjustment: 4gear, Suction: 4000Pa, Charging Base: , Robot Vacuum Cleaner 3C: , Water Volume Adjustment: 3gear, Runtime: 90mins, Dust Box Capacity: 300ml
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
1. ($375.99): BG589b2e
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/5cd
Old coupons (from the oldest to the newest): BG622yb28, BGjuneBR3c, BGAHPU13, BGxiaomi3C, BGeaf456, TTBLACK5
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi Mijia 3C Robot Vacuum Cleaner? There we go.
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)).