Detailed Answer
Maintenance costs are low: routine maintenance (cleaning/inspection) is free self-service; consumables (key caps/sealing rings/antennas) cost a few dozen yuan; batteries (lithium) range from tens to a hundred yuan; annual factory inspection (Lider) is reasonably priced. Compared to replacing the unit (¥268~¥978), maintenance costs are a very small share. Lider's 2-year trade-in lowers long-term costs.
| Routine | Free self-service |
| Consumables | Tens of yuan |
| Annual inspection | Reasonable fee |
Note:Maintenance offers high ROI — don't save small money to spend big.