An iRobot Roomba 800 Series vacuum typically costs $60-$250 used or refurbished in the U.S.; unopened old stock can run $250-$450. Model, condition, battery health, included accessories, seller warranty, and shipping have the greatest effect on the price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Used Roomba 800 Series | $60 | $120 | $180 | Working unit, typically sold without a meaningful warranty |
| Refurbished unit | $120 | $180 | $250 | Price depends on testing, battery, accessories, and return coverage |
| New old stock | $250 | $350 | $450 | Unopened, discontinued inventory; availability varies |
| Replacement battery | $25 | $45 | $75 | Compatible third-party or branded replacement |
What a Roomba 800 Series Usually Costs Used or Refurbished
Most buyers should budget $90-$180 for a working secondhand Roomba 800 Series, with a practical average near $130. A tested refurbished model usually costs $120-$250, while an unopened unit may be listed for $250-$450. These are resale-market ranges, not current manufacturer retail prices: the 800 Series is discontinued, so stock and asking prices change from seller to seller.
The range assumes a standard robot vacuum in working condition, with ordinary cosmetic wear and at least one usable filter. Prices near the low end often mean an older battery, missing dock or accessories, or an as-is sale. A higher price may include a replacement battery, virtual wall barrier, extra filters, or a short seller warranty. Shipping and sales tax can add roughly $10-$40 combined, depending on the listing and location.
Model names include the 805, 850, 860, 870, 880, and 890, though availability differs. A model number alone does not guarantee a higher resale value; condition and what is included matter more. Assumptions: U.S. resale market, functioning robot, standard accessories, and no major repair required.
A realistic target is about $100-$180 for a complete, tested unit with a serviceable battery.
How Batteries, Brushes, and Seller Testing Shape the Quote
For a used robot, inspect the parts and evidence behind the asking price. The vacuum may look clean but still need a battery, filter, brush set, or wheel repair. A listing that states the robot has been tested and shows it returning to its dock is more informative than one that only says it powers on.
| Quote component | Low | Average | High | Typical scope |
|---|---|---|---|---|
| Robot and charging dock | $60 | $120 | $180 | Used unit, basic dock, condition varies |
| Battery replacement | $25 | $45 | $75 | Compatible battery; installation is usually simple |
| Filters and brush set | $10 | $25 | $45 | Replacement filters and extractors or side brush |
| Virtual wall barrier | $10 | $20 | $35 | One used or compatible boundary accessory |
| Seller testing or refurbishment | $0 | $20 | $50 | May be included in the unit price or listed separately |
These component ranges are approximate and can overlap with the seller’s package price. A used robot advertised for $120 with a weak battery may cost $145-$195 after a battery and filter set. A $170 refurbished unit with a fresh battery, cleaned parts, and a return period could be a better-value purchase, provided its condition is documented.
Replacement filters and brushes are commonly sold in multipacks, so the per-item price may be lower than buying each part separately. Confirm that replacement parts are compatible with the exact 800 Series model. Ask whether the dock, power cord, bin, and any advertised barrier are included; replacing missing components can erase an apparent bargain.
For a professional repair, labor may be priced by the job rather than the hour. A basic diagnosis or cleaning might be $30-$75, while a motor, wheel, or charging repair can reach $60-$150 before parts. For example, one hour of bench work at $50-$90 per hour adds that amount to the part cost.
The battery and included dock are the most important items to verify before comparing two listings.
Battery Runtime, Model Number, and Condition Change the Price
Battery condition is a major price driver because an aging battery can shorten cleaning time or prevent the robot from finishing a run. Ask how long the vacuum runs on a full charge and whether the battery has been replaced. If runtime is not known, treat a used battery as a possible $25-$75 expense rather than assuming it is healthy.
Condition also matters. A unit with cracked housing, damaged charging contacts, missing bin parts, or an error that prevents docking may be worth only $30-$80 for repair or parts, if it is worth buying at all. A clean, fully tested robot with a working dock, fresh battery, and accessories may command $150-$250 refurbished or in especially good used condition.
Accessories can influence the price by $10-$35 each, but buyers should pay only for items they will use. A virtual wall barrier helps restrict access to an area; it does not make the robot equivalent to a current model with newer mapping features. Confirm the specific model and accessory compatibility before paying a premium for a bundle.
Shipping distance and seller type create another difference. Local pickup may avoid $10-$30 in shipping, while marketplace fees and seller return policies can raise the delivered price. A return window has value when the battery or navigation cannot be checked before purchase, but a long warranty claim process may be less useful on a discontinued product.
Pay more for proven battery performance and a return option, not merely for a higher model number.
How to Keep an 800 Series Purchase Under $150
Set a delivered-price ceiling before shopping. For a used unit, a $100-$130 target leaves room for a battery or filter replacement while keeping the initial outlay below about $180. If a seller wants $180 or more for a used robot, compare that total with a refurbished listing that includes a fresh battery and a return period.
Ask for a short video showing the robot starting, cleaning, and docking. Request a clear photo of the battery compartment, charging contacts, bin, and included accessories. These checks can reveal missing pieces before payment. For local pickup, test the robot for several minutes and confirm that it accepts a charge; a brief test cannot prove full battery capacity, but it can catch basic faults.
Choose a standard accessory package rather than paying extra for several barriers or spare parts that may not be needed. When buying a replacement battery, compare the total cost of the battery and shipping, and check the seller’s return terms. A low-priced battery with no usable return option can be a false saving if it does not hold a charge.
Refurbished stock can be limited, so compare at least two or three current offers rather than relying on an old list price. Use the same comparison basis: robot, dock, battery condition, included parts, shipping, taxes, and warranty. A seller’s “refurbished” label alone does not establish what was replaced or tested.
The strongest savings usually come from buying a tested unit with only the accessories needed and pricing the battery risk upfront.
How U.S. Location and Shipping Affect the Delivered Price
Local resale prices can vary with supply and shipping. In large metro areas, more listings may make it easier to find a working unit for $70-$150, while limited local supply can push asking prices 10%-20% higher. These differences are not fixed regional rules; a good local deal or an unusually expensive listing can appear anywhere.
In rural areas, fewer nearby sellers can mean a longer drive or reliance on shipping. A $90 listing with $25 shipping and tax may approach the cost of a $120 local unit that can be tested before purchase. Cross-country shipping can also make returns inconvenient, especially if the seller does not cover return postage.
State and local sales tax generally applies to purchases through many online marketplaces, and the rate depends on the delivery address. For a $150 listing, a tax bill of roughly $8-$15 is a reasonable planning allowance in many locations, though actual rates vary. Confirm the checkout total rather than comparing the advertised item price alone.
Compare delivered totals, not just listing prices, and include the cost of a return if the unit arrives faulty.
Three Roomba 800 Series Quotes for Different Buying Situations
A basic local-pickup example might be an 805 with a dock and unknown battery history for $75. Adding a $40 battery and $15 filter set brings the total to about $130 before tax. This can be reasonable if the robot passes a short test and the buyer accepts that the battery replacement is not guaranteed to solve other faults.
A midrange refurbished example could be an 870 priced at $165, with a tested dock, replacement battery, and one-month seller return period. Add approximately $15 for shipping and $10 in tax, and the delivered amount is about $190. This costs more upfront but reduces uncertainty around the most common wear item.
An unopened old-stock example might be an 890 listed for $325, plus $20 shipping and about $20 tax, for a delivered total near $365. The original packaging may appeal to a buyer who values unused condition, but it does not eliminate age-related battery degradation or create current manufacturer support. Check the return policy and battery status before paying a new-in-box premium.
Actual marketplace offers vary, and these scenarios are illustrations of how add-ons change the total. Each assumes standard U.S. shipping and no unusual repair or parts requirement. Assumptions: One robot, one dock, ordinary delivery, and no paid technician visit.
For most buyers, the refurbished example offers a more balanced price than paying a large premium for old stock.
Repairing an 800 Series Versus Buying Another Vacuum
A modest repair can make sense when the robot is otherwise functional. A replacement battery at $25-$75 or a brush-and-filter refresh at $10-$45 may extend useful service for less than the cost of another complete unit. Basic cleaning and part replacement are often manageable at home, but the value depends on the robot’s age, battery performance, and condition of its wheels and charging system.
When a repair requires a $60-$150 shop visit plus parts, compare the repair total with a tested replacement. Spending $100 to repair a unit worth about $100-$150 can be difficult to justify unless the robot has a known history or the repair includes a useful warranty. For a unit with multiple faults, the combined parts and labor can exceed $180, before shipping or diagnostic charges.
A newer vacuum may cost more initially but can offer features absent from the 800 Series, such as app-based room mapping or newer navigation, depending on the model. Basic new robot vacuums often start around $150-$250, while feature-rich models can cost substantially more. Compare the needed features and ongoing parts availability, not just suction or the advertised discount.
Repair is most economical when the fault is limited to a battery or inexpensive consumable rather than several mechanical parts.
What Ongoing Battery and Filter Spending Looks Like
After purchase, plan on roughly $10-$45 for a filter and brush refresh, depending on the quantity and brand, and $25-$75 for a replacement battery when runtime declines. Usage, floor debris, pets, and maintenance habits affect how quickly parts wear. There is no dependable fixed replacement interval for every household, so inspect the parts and follow the model’s care instructions.
A buyer using the robot regularly might budget $20-$60 per year for ordinary filters and brushes, then reserve $25-$75 for a battery replacement when needed. That makes a simple first-year budget about $150-$300 for a $120 used or refurbished purchase plus likely consumables, excluding repairs and tax. A low-use robot may cost less to maintain, while a heavily used or poorly maintained one can need parts sooner.
Because the 800 Series is discontinued, verify that compatible filters, brushes, and batteries remain available from sellers before choosing a specific model. Third-party parts can reduce the cost but vary in fit and durability. Keep the packaging or receipt for any battery purchase until it has been tested, and check the seller’s return policy.
Budget for consumables and possible battery replacement separately from the initial robot price.