Vacuum, Power (W): 400W, Cleaning Area (sq.m.): 380㎡, Ceramic Tile, Voltage(V): DC 4.5-18V, Tile Floor, Suction, Wood Floor, Noise (dB): ≤78dB, Function: Dry, Feature: Auto, Dust Box Capacity: 0.5L, Type: Upright, Marble Floor, Floor Types: Carpet, Frequency (Hz): 50 – 60Hz, Shag Carpet.
Just check coupons out (with price alert and history). What is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Price history and price alert
Here is price history (for all/most countries) for Xiaomi DREAME V9P Vacuum Cleaner. The lowest price was: $199.99.
Price records source(s): Gearbest
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)).