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Robot vacuum & mop · Used price guide
Resale index · Jul 2025 = 100
Down 5.9% year on year. Best buying window: August.
Bench test
Not yet bench-tested by Robot AutoTrader. Resale values are drawn from verified sale data.
A used Ecovacs Deebot T30S Combo with complete dock and accessories should be priced at £380 to £530. The T30S Combo retails at £849 new; at £450 used you are getting a 47% saving on a machine that competes directly with the Roborock S8 Pro Ultra on mopping performance.
Both are strong mid-to-high-end brands with good UK availability. Roborock has a longer UK track record and wider spare parts ecosystem. Ecovacs' AIVI obstacle avoidance and OZMO mopping are competitive at this tier. The Deebot T30S Combo typically offers a 10–15% larger used discount against retail than the Roborock S8 Pro Ultra, making it better value if price-per-feature is your priority.
The T30S Combo requires a Wi-Fi connection for initial setup and for app-based scheduling, zone control, and YIKO AI voice integration. Local-only mode is limited — the robot will clean on its last saved schedule but cannot receive new commands or update maps without connectivity. This is standard for this product tier.
See current Ecovacs Deebot T30S Combo listings
Every listing shows measured battery health, owner count, and a price benchmarked against this index.