This is a dedicated robot mop used for routine hard-floor maintenance, often scheduled multiple times per week. The most common wear items are the battery pack, wheels, sensors, and the spray/pump system.
Repair makes sense when the issue is a consumable or modular part-battery replacement, wheel module, or cleaning/replacing pads and filters. If the main board fails or navigation becomes unreliable due to sensor issues that persist after cleaning, replacement is often more economical than a high labor repair.
Use the threshold as a firm guide: robot cleaners can accumulate multiple small failures, and paying near the threshold for one fix can lead to additional costs soon after. A tipping factor is how well it still maps and completes runs; if it frequently gets stuck, misses rooms, or reboots mid-clean, the time cost to babysit it can justify replacement even if the device still technically turns on.