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Philips Sonicare

Philips Sonicare DiamondClean Smart 9300

Philips Sonicare DiamondClean Smart 9300

3.4(191 ratings)

Best price now

$66.99at eBayVerified

66% under what the other stores charge

Compared across 4 stores. Prices are checked against each store and labelled with when.

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Our take on the Philips Sonicare DiamondClean Smart 9300

The DiamondClean Smart 9300 is Philips Sonicare's premium sonic toothbrush, with five cleaning modes, three intensity levels and a brush head that tracks where you brush. It pairs with the Sonicare app over Bluetooth for coaching and progress reports. At $66.99 at eBay as of November 6, 2026, it sits well below what this model has typically sold for, so the price is unusually low for a flagship Sonicare.

Best forShoppers who want app-guided brushingPeople upgrading from a basic sonic brushGum-health-focused brushersBuyers who want a premium brush at a discount

Pros

Five modes plus three intensity levels cover sensitive gums to deep clean
Brush head sensor and app show missed spots and pressure warnings
Sonic action at up to 62,000 brush movements per minute
USB charging glass and travel case in the box
Replacement heads are widely stocked

Cons

App pairing and syncing can be unreliable
Premium price when not discounted
Brush heads are costly over time
Some owners report units failing within a year or two

Philips Sonicare DiamondClean Smart 9300 prices at every store

Philips US NewNew
In stock
$199.96Observed at 10:10 AM
Visit store
WalmartNew
In stock
$199.96Observed at 10:10 AM
Visit store
TargetNew
In stock
$199.99Observed at 10:10 AM
Visit store
eBayOpen box
Availability unknownSold by jstang81 (99.5% positive, 5,400 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$34.99Free shippingVerified
Visit store
eBayNew
Availability unknownSold by oralito (99.3% positive, 139 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$66.99Free shippingVerified
Visit store

Also available at

eBayCheck price at eBay
Bloomingdale'sCheck price at Bloomingdale's

Philips Sonicare DiamondClean Smart 9300 price history

Lowest price we've seen: $199.96 on Nov 6 at Walmart. Tracked across 5 stores since Nov 6.

What reviewers say

3.4 / 5191 ratings

Ratings average 3.4 out of 5 from 191 ratings, so reception is mixed. Owners like the clean and the coaching features but report app problems and reliability issues.

What people mention

CleaningPraisedOwners say teeth feel noticeably cleaner than with manual or older brushes.
AppCriticisedPairing and syncing with the Sonicare app is frequently unreliable.
BatteryMixedSome get the rated two weeks per charge; others see it drop quickly.
BuildCriticisedA number of owners report handles or charging bases failing within a year or two.
Pressure sensorPraisedThe vibration warning when pressing too hard is called genuinely useful.

Specifications

Type: Electric
Bristle Type: Medium Bristle
Rechargeable: Yes
Speed: Sonic
Color: Pink
Pattern: Spot

Questions and answers

Is $66.99 a good price for the DiamondClean Smart 9300?: Yes. That is far below the typical selling price for this flagship model, which usually runs well over $100. At $66.99 at eBay as of November 6, 2026, it is the lowest of the four stores listing it new.
What is in the box?: The set includes the handle, a charging glass, a travel case and a brush head. Confirm the bundle with the seller, since listings vary.
How does it differ from the DiamondClean 9300?: The Smart version adds Bluetooth and the Sonicare app with location and pressure coaching. The cleaning modes and sonic motor are otherwise closely matched.
How often do I replace the brush head?: Philips recommends every three months. The handle tracks head wear and reminds you when to swap.
Does it work with any Sonicare brush head?: It uses the standard Sonicare click-on heads, so most Sonicare replacement heads fit. The Smart tracking features work best with the RFID-tagged heads.
How long does the battery last per charge?: Philips rates it at about two weeks of twice-daily brushing. Heavy app use and high intensity shorten that.
Where is the Philips Sonicare DiamondClean Smart 9300 cheapest?: At eBay, for $66.99, 66% under what the other stores charge, as of our latest check.
What do buyers say about the Philips Sonicare DiamondClean Smart 9300?: Rated 3.4 out of 5 from 191 ratings.
Where can I buy the Philips Sonicare DiamondClean Smart 9300?: 5 stores we checked sell it, including eBay, Philips US New, Target, Walmart, Bloomingdale's.

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