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Philips Sonicare

Philips Sonicare 3100 Series Electric Toothbrush

Philips Sonicare 3100 Series Electric Toothbrush

4.3(4,200 ratings)

Best price now

$25.00at MercariObserved at 10:33 AM

17% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

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Our take on the Philips Sonicare 3100 Series Electric Toothbrush

The Philips Sonicare 3100 Series is a rechargeable sonic toothbrush with a single cleaning mode and a two-minute timer with quadpacer. It is the entry point to Sonicare's brush heads and charging system, so it suits shoppers who want brand-name sonic cleaning without paying for app or pressure-sensor features. At $19.99 at eBay as of November 6, 2026, it sits well below its recent range of $27.00 to $29.96.

Best forFirst-time electric toothbrush buyersBudget shoppers wanting a SonicareTravelers who want a simple rechargeable brushTeens and shared bathrooms

Pros

Sonic cleaning action at an entry-level price
Two-minute timer with quadpacer for even brushing
Rechargeable, so no disposable batteries
Uses standard Sonicare brush heads
Simple one-button operation

Cons

No pressure sensor to warn against brushing too hard
Only one cleaning mode
No travel case included
Battery life is shorter than premium Sonicare models

Philips Sonicare 3100 Series Electric Toothbrush prices at every store

MercariNew
In stock
$25.00Observed at 10:33 AM
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WalmartNew
In stock
$29.96Observed at 10:33 AM
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Philips US NewNew
In stock
$29.96Observed at 10:13 AM
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PoshmarkNew
In stock
$35.00Observed at 10:13 AM
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Best BuyNew
In stock
$49.99Observed at 10:10 AM
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eBayOpen box
Availability unknownSold by thefitzgeralds (98.6% positive, 6,700 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$22.88Free shippingVerified
Visit store
eBayNew
Availability unknownSold by sweet-ptto (100% positive, 29 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$19.99+ $6.62 shippingVerified
Visit store

Also available at

eBayCheck price at eBay
Dillard'sCheck price at Dillard's
BelkCheck price at Belk
CVS PharmacyCheck price at CVS Pharmacy
Balec GroupCheck price at Balec Group
DoorDashCheck price at DoorDash
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Touch of ModernCheck price at Touch of Modern
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Philips Sonicare 3100 Series Electric Toothbrush price history

$27.00$25.00

Nov 3Nov 6

Lowest price we've seen: $25.00 on Nov 6 at Mercari; highest $27.00 on Nov 3. Tracked across 14 stores since Nov 3.

What reviewers say

4.3 / 54,200 ratings

Owners rate the 3100 Series well as a basic sonic brush, praising its cleaning and simple timer. Complaints center on the lack of a pressure sensor and modest battery life.

What people mention

CleaningPraisedOwners say teeth feel cleaner than with a manual brush.
TimerPraisedThe quadpacer prompts are seen as helpful for brushing the full two minutes.
Pressure sensorCriticisedBuyers miss the pressure warning found on higher Sonicare models.
BatteryMixedSome owners find the charge lasts well short of two weeks.
ModesCriticisedReviewers note there is only one cleaning mode.

Specifications

Rechargeable: Yes
Color: Black
Type: Electric
Bristle Type: Medium Bristle
Speed: Sonic

Questions and answers

Is the Philips Sonicare 3100 Series worth it?: For a first electric brush or a budget Sonicare, yes. It cleans well and has a timer, but it lacks a pressure sensor and extra modes.
How does it compare with the Sonicare 4100?: The 4100 adds a pressure sensor and a second cleaning mode. The 3100 is the cheaper, simpler option.
How long does the battery last?: Philips rates it for about two weeks of twice-daily brushing. Owners often report needing to charge sooner.
Does it use standard Sonicare brush heads?: Yes. It takes the same click-on Sonicare heads as other models in the line.
What is in the box?: The brush handle, one brush head and a charger. No travel case is included.
When is it cheapest?: It has traded between $27.00 and $29.96 recently, so $19.99 at eBay as of November 6, 2026 is a low point.
Where is the Philips Sonicare 3100 Series Electric Toothbrush cheapest?: At Mercari, for $25.00, 17% under what the other stores charge, as of our latest check.
What do buyers say about the Philips Sonicare 3100 Series Electric Toothbrush?: Rated 4.3 out of 5 from 4,200 ratings.
Where can I buy the Philips Sonicare 3100 Series Electric Toothbrush?: 14 stores we checked sell it, including Mercari, Walmart, Philips US New, Poshmark, eBay.

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