Model: VXVC11, Power: 50W, Dust Bag Capacity: 3L, Material: ABS, Suction: 3000Pa, Voltage: 110-240V, Battery Capacity: 5200mAh, APP Control: Yes, Climb Capability: 2cm, Model: VXVC11-JC, Metal, Battery Type: Li-ion battery, Frequency: 50/60Hz, Power: 950W, Water Volume Control: 3gear, Water Tank Capacity: 250ml, Brand: Viomi.
Basically copy coupon, view price history or create e-mail price alert. You probably want to know 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):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($678.59): BGHOMEA13
2. ($699.99): BGCNVMAH
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/i1u
Price history and price alert
Do you need price history chart (for all/most countries) for Viomi Alpha 1C Robot Vacuum Cleaner? There we go. The lowest price was: $678.59.
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)).