Is Roborock S7 a good buy?

Roborock S7 Max Ultra Robot Vacuum Cleaner 5500Pa Self-Drying

Are these worth buying from AliExpress? : r/Roborock

Sonic Vibration Technology Scrubs at up to 3000 cycles per minute for more effective dry stain removal. Able to lift on low-pile carpets, avoid dragging dirt across the floor, and more. Multi-Directional Floating Brush Multiple planes of movement keep the brush closer to the ground for deeper cleaning. Multi-Level Mapping and Automatic Room Recognition Map up to four levels, with every room recognized automatically.

Roborock S7 Robot Vacuum and Mop with Sonic Mopping, Strong 2500PA Suction, Multi-Level Mapping, Plus App and Voice Control(Black)

Just Fun Tech: Roborock S7 MaxV Ultra Review

My new helper Roborock S7 robot vacuum - Chit-Chat-Chill-Out Lobby - AV Discourse Community Forum (SG)

Roborock S8 Pro Ultra Review

One Dock to Rule Them All : Experience hands-free cleaning with the RockDock Ultra for a new level of convenience, feature-packed so all you have to

roborock S7 Max Ultra Robot Vacuum and Mop Combo, Auto Mop Drying and Washing, Self-Emptying and Refilling, 5500Pa Suction, Reactive Tech Obstacle

Before you buy the roborock Q7 Max+

Roborock S7 MaxV Ultra review: a high-end robot vacuum for a very high price - The Verge

Roborock S7 MaxV Ultra Vacuum Cleaner Review - Consumer Reports