Roomba Combo j9+: What It Does, and Is the Price Fair?
iRobot's vacuum-and-mop robot launched at $1,399. Here is what it does, what it doesn't, the dated prices we found, and a five-step check for whether today's price is fair. We don't predict sales.
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✓ This guide is for you if
- Are considering the Roomba Combo j9+
- Want to know if today's price is fair
- Want to compare it with the vacuum-only model
- Want a price alert
✗ Skip it if
- Want a verdict to buy or wait (we don't predict prices)
- Want a live price (open the listing)
- Need hands-on test results from us
- Want pad washing built in (check newer models)
- What the Roomba Combo j9+ is
- What the reviews say, and the price trade-off
- What the price has looked like
- How to tell whether today's price is fair
- Who should look at it
- Common mistakes when buying
- Compare before you decide
- Roomba Combo j9+ price reference points
- Honest pros and cons
- Before you buy
- Keep going
- FAQ
What the Roomba Combo j9+ is
The Roomba Combo j9+ is iRobot's robot vacuum with a built-in mop. BGR's June 7, 2024 review lists a $1,399 launch price and calls it the most impressive Roomba iRobot had made at the time. The mop sits on top of the robot and is lowered by arms while it mops; BGR says the robot lifts the mop pads when it detects carpet, which keeps water off rugs.
The dock is larger than other Roomba docks. BGR describes room for debris bags (up to 60 days of debris), clean and dirty water tanks good for up to 30 days of regular mopping, and automatic emptying and refilling of water after each mopping job. The same review notes there is no automatic mop-pad washing or drying, so you will still handle the pads yourself.
What the reviews say, and the price trade-off
BGR's verdict was that the mop extends the time between manual mopping sessions rather than replacing them. Its listed cons were regular rollers instead of the wider ones on the s9+, no dual spinning mops, and the price. It also named strong suction, obstacle avoidance and the auto-empty and refill dock as pluses.
That review is from 2024. iRobot has launched newer models since, so read recent reviews before you buy, especially if you are comparing the j9+ with something newer at a similar price.
Check the real price history
Install the free Zroppix extension to see a 90-day price history and a BUY or WAIT verdict right on the Amazon page.
What the price has looked like
Two dated reports show how far the price has moved from the $1,399 list price. In June 2024 BGR saw it at $999. On July 15, 2024, TechRadar and Slickdeals reported $799 at Amazon during Prime Day and called it the lowest price they had seen for this model. Both are expired and neither tells you today's price. The table below sets them out.
Black Friday is on November 27, 2026. We can't tell you whether this robot will drop again, so use the method below on the live listing.
How to tell whether today's price is fair
We don't publish a price chart or a predicted price for the Roomba Combo j9+ on this page, because we can't back one up with recorded data here. What we can give you is a method that works for any product, and the free Zroppix extension that applies it for you on the Amazon page.
- Confirm the exact version. Model year, size, colour and bundle can each change the price. Read the title and the variant selector, not just the headline.
- Open the price history. Use the Zroppix extension (90-day history on Amazon pages) or another tracker such as CamelCamelCamel or Keepa. Where Amazon shows its own price history link, use that too.
- Compare today's price with the lowest in the window. At or near the low is a fair price. A big "percent off" badge on its own proves little, as our guide to sale badges explains.
- Check who sells it. Amazon or the brand is safest. Compare against the manufacturer's own site, which may run separate promotions.
- Set an alert if the price isn't right yet, and decide on your own timeline. Nobody can tell you what the price will do next.
Who should look at it
- You want one robot to vacuum and light-mop: this is what the Combo is for. Expect to wash the pads yourself.
- You mostly vacuum: compare the vacuum-only j9+, which BGR said costs less.
- You have lots of carpet: the mop lifts over carpet per BGR, but check the room layout you have.
- You want the cheapest self-emptying robot: look at the Shark and Roborock options on our other pages.
Common mistakes when buying
- Assuming it washes and dries its own mop pads. It doesn't, per BGR.
- Comparing against the launch price. $1,399 was a list price few paid for long.
- Mixing up the Combo j9+ with the vacuum-only j9+. They are different models.
- Ignoring running costs. Bags, filters and pads wear out.
Compare before you decide
If the price isn't right, or you want to compare options, these are worth a look.
Vacuum and mop with an auto-empty and water-refill dock, per BGR's June 2024 review.
Check before buying: Match the exact model and dock. iRobot sells several Combo variants.
BGR notes buyers who don't need mopping can get the regular j9+ for less.
Check before buying: Confirm it's the vacuum-only model and what's in the box.
The older camera-based model with obstacle avoidance. We have a price check page for it.
Check before buying: Check the model, base and price against its history.
Self-emptying Shark family. Model numbers vary widely.
Check before buying: Match the exact model number and seller.
The dock uses debris bags, and filters and brushes wear out.
Check before buying: Match the bag type to your dock before ordering.
Roomba Combo j9+ price reference points
Dated reports, not today's prices. Both are expired.
| Date | Model | Reported price | Source | Check it |
|---|---|---|---|---|
| Jun 7, 2024 | Roomba Combo j9+ | $1,399 list, $999 on sale | BGR | Find cheaper → |
| Jul 15, 2024 | Roomba Combo j9+ | $799 at Amazon vs $1,399 list; called its best price to that point | TechRadar, Slickdeals | Find cheaper → |
Honest pros and cons
What stands out
- Strong suction for a Roomba, per BGR
- Vacuum and mop in one
- Dock empties, and refills water
- Lifts the mop over carpet, per BGR
What to weigh
- No automatic pad washing or drying
- Launch price was high
- Newer models exist now
- We show no live prices
Before you buy
A quick checklist for this purchase.
- Confirm the exact model in the listing title and variant selector.
- Check what's included: bundle, accessories, colour.
- Open the price history for that exact model.
- Compare today's price with the lowest in the window.
- Check the seller and the return window.
- Set an alert if the price isn't right yet.
Keep going
Frequently asked questions
What is the Roomba Combo j9+?
iRobot's robot vacuum with a built-in mop and a dock that empties the bin and refills water, per BGR's June 2024 review.
How much does it cost?
It launched at $1,399. BGR saw $999 in June 2024 and TechRadar reported $799 at Amazon in July 2024. Check the live listing for today's price.
Does it wash its own mop pads?
No. BGR notes there is no automatic washing or drying of the pads.
Does the mop damage carpet?
BGR says the robot lifts the mop pads when it senses carpet. Test it on your own rugs.
Is the Combo j9+ better than the regular j9+?
Only if you want mopping. BGR says buyers who don't can get the regular j9+ for less.
Will it go on sale for Black Friday?
We can't predict it. Black Friday is November 27, 2026. Check its price history and set an alert.
How do I check the price history?
Install the free Zroppix extension for a 90-day history on Amazon pages, or use a tracker such as CamelCamelCamel or Keepa.
Buy at a fair price, not a hyped one
Confirm the version, check the history, and set an alert if it isn't there yet.
🛡️ See the Real Price History
The free Zroppix extension shows a product's price history and a BUY or WAIT verdict right on the Amazon page, so you can tell a real deal from a fake discount.
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How this page was made. Written by the Zroppix team with AI assistance (Claude, from Anthropic). Prices and facts can change after a page is written, so check the retailer’s own page before you buy. This page has no affiliate links. We make Zroppix and sell Zroppix Pro, a paid plan.