"It's cheap because it's not fully autonomous; you are the charging station."
The 'Intelligent Visual Navigation' is a camera-based system that attempts to distinguish grass from non-grass areas. In reality, without a self-charging dock, it's just a self-driving mower that wanders until its battery dies, requiring you to find it and manually recharge it.
This is for someone with a very small, simple, flat lawn (well under 1,000 sq ft) who is more interested in the novelty than in true automation. Consider it if you want to avoid pushing a mower but don't mind the daily chore of finding it and swapping its battery.
Anyone expecting a 'set it and forget it' experience should skip this. The lack of a self-charging dock makes it a high-maintenance gadget, not an autonomous solution. If your lawn is complex, sloped, or larger than a small townhouse backyard, this machine is not equipped for the job.