2cm obstacle climbing, the robot absorbs all the debris, 10mm laser edge sensor, 4 anti-drop stair sensors, millet or any other wastes all in a sudden, With a strong power, – 5200mAh Large Capacity Battery, – Almighty Helper, soybeans, Auto self-recharging sensor, 2mm rubber bumper, The robot carries a 5200mAh Li-ion battery (included) which ensures 2.5 hours cleaning for a house of 250sq.m. in full charge, dust, steel beads, – 2000Pa Super Suction, Auto power-off after leaving the floor, 360 degree LDS pressure sensor.
Just check coupons out (with price alert and history). 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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in Hong Kong.
Link: Banggood product page
1. ($375.99): BGS55LK
2. ($406.33): aff7off
3. ($406.33): bGpAnDacHeCk
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): c7951a, PICODICOM, plrobos55, BGRBS55, BGROS5505, BGRS556, BGROS556, BGRS557P, BGitroborockS55, BGS55PL, BGXMVROB, BGВСЕS55, BGRBS558, BGS55089, BGS55339, BGBinKupon154, BGRS55, BGRBS5539, bgchinafest, BGS55RB, BGRBSS55, BGRBS510, BGS55RBC, BGERS55, BGS55V, BGS556, BGHS55K, BGS55k, BGS55B, BGS55HK, BGHKR, BGS55RY, BGG55, BGBINKUPON20, BGS555, BG55RS, BGS55CZ, BGRS55CZ, BGS55SA, BGHOMEAPP, BGPRS55, BGRCD55, BGCRS55, BGYGS55, BGAFF7OFF, BGCZRS55, BG55RA, bgshOOp10, BGHOMEAPP12, BGHOMEAPP13, BGCZRBS55, BGHOMEA13, BGCZRSR55, 7bcdf9, BGwhielabel
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi Roborock S55 Vacuum Cleaner International [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Roborock S55 Vacuum Cleaner International. The lowest price was: $327.35.
Price records source(s): Gearbest, 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)).