Is sonoff s31 profitable to sell on Amazon United States?

The niche generates $32K/yr across 6 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -11.5%. Flapen's verdict: Skip it (38/100).

How competitive is the sonoff s31 niche?

2 brands and 7 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in sonoff s31?

Top complaints mined from reviews: Connectivity-Overall, Design-Overall, Assembly/Installation. The return rate is 2.9%.

When does demand for sonoff s31 peak?

Demand peaks in Aug–Sep–Oct–Nov–Dec; the busiest month runs 12.1× the quietest.

What does it cost to enter the sonoff s31 niche?

Listings span $8.74–$29.13; the average listing price is $16.84 (sweet spot $15–$100). The average incumbent carries 209 reviews — the moat a new listing must climb.

sonoff s31

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Review moat

Great209.33

avg incumbent reviews — the moat a new listing must climb

Conversion

Great8.8%

search→purchase rate — share of searches ending in a sale

Avg price

Great$16.84

avg listing price — sweet spot $15–$100

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Price range

Good$8.74–$29.13

cheapest to priciest tracked listing — scored on the share inside $15–$100

Returns

Good2.9%

return rate — above 5% kills the launch gate

Growth

Bad-11.5%

90-day search growth — must beat 0% to launch

Market size

Bad$32K

$32K/yr · 22K searches

Competition

Bad97%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, sonoff s31 is a $32K/yr Amazon United States market (22K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Aug–Sep–Oct–Nov–Dec. Verdict: Skip it — 38/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

sonoff s31 market data

Units sold / yr: 2K–3K; avg 100–250/product
Revenue / yr: $34K–$42K; units × avg price
Conversion rate: 8.8%
Avg BSR: #228
Page quality: 0%
Prime: 100%
Sponsored: 83%
Out of stock: 59.3%
Avg brand age: 38 months
Avg seller age: 168 days

Competition & brand share

The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.

Brands

2 rising

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

97%

Top 20: 100%

Open market

SONOFF97%
THIRDREALITY3%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -11.5% search growth over the last 90 days.

Peak months: Aug, Sep, Oct, Nov, Dec · busiest ÷ quietest = 12.1×

Open Trend

Top sonoff s31 products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 6 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

SONOFF S31 WiFi Smart Plug with Energy Monitoring 15A Smart Outlet Timer Switch ETL Certified Compatible with Alexa & Google Home IFTTT Supporting 2.4 Ghz Wi-Fi Only

SONOFF$8.744.2★496 rev

SONOFF Matter Smart Plug S41s 4-Pack 15A 1800W WiFi Smart Plug Outlet ETL Certified Remote & Voice Control with Timer Compatible with Alexa Google Home Apple HomeKit & SmartThings

SONOFF$28.644.5★69 rev

SONOFF S31 Lite Smart Plug Smart Outlet Switch ETL Certified No Hub Required 2.4 Ghz WiFi Only IFTTT Supporting Compatible with Alexa & Google Home

SONOFF$10.693.8★31 rev

SONOFF S40 Lite 15A WiFi Smart Plug ETL Certified Smart Socket Outlet Timer Switch Compatible with Alexa & Google Home Assistant IFTTT Supporting No Hub Required -A Certified for Humans Device

SONOFF$11.334.2★135 rev

SONOFF S40 15A WiFi Smart Plug with Energy Monitoring ETL Certified Smart Outlet Timer Switch Work with Alexa & Google Home Assistant IFTTT Supporting 2.4 Ghz Wi-Fi Only 1-Pack

SONOFF$12.504.4★76 rev

Newest

by launch date

SONOFF Matter Smart Plug S41s 4-Pack 15A 1800W WiFi Smart Plug Outlet ETL Certified Remote & Voice Control with Timer Compatible with Alexa Google Home Apple HomeKit & SmartThings

SONOFF$28.6469 rev

10mo ago

SONOFF S40 Lite 15A WiFi Smart Plug ETL Certified Smart Socket Outlet Timer Switch Compatible with Alexa & Google Home Assistant IFTTT Supporting No Hub Required -A Certified for Humans Device

SONOFF$11.33135 rev

4y ago

SONOFF S40 15A WiFi Smart Plug with Energy Monitoring ETL Certified Smart Outlet Timer Switch Work with Alexa & Google Home Assistant IFTTT Supporting 2.4 Ghz Wi-Fi Only 1-Pack

SONOFF$12.5076 rev

4y ago

THIRDREALITY Smart Plug 4 Pack 15A Smart Outlet with Timer Function Zigbee Repeater ETL Certified Requires ZigBee Hub No Power Meter

THIRDREALITY$29.13449 rev

4y ago

SONOFF S31 WiFi Smart Plug with Energy Monitoring 15A Smart Outlet Timer Switch ETL Certified Compatible with Alexa & Google Home IFTTT Supporting 2.4 Ghz Wi-Fi Only

SONOFF$8.74496 rev

5y ago

What buyers say about sonoff s31

What buyers praise and complain about, mined from review topics.

What buyers love

Assembly/Installation16%

“Easy install”

Connectivity-Overall13%

“Connects and stays connected”

Socket/Port/Plug10%

“Great smart plug”

Compatibility-Overall8%

“Easy pairing with Smartthings”

Value For Money7%

“Worth the money”

Quality-Overall6%

“The construction quality is fair”

Smart Assistant Support4%

“Easy setup with my Android phone sending it to Home Assistant”

Ease Of Use4%

“So convenient”

Efficiency4%

“It works”

Strength3%

“These are very well made units”

What buyers complain about

Connectivity-Overall32%

“Didn't connect”

Design-Overall9%

“The major drawback is the shape”

Assembly/Installation6%

“Bad quality of assembly”

Size-Overall6%

“it's a big one”

Ease Of Use3%

“They were slightly tricky to flash”

Functionality-Overall2%

“Doesnt work”

Defective Material/Parts2%

“Basically a broken/scam product”

Material Quality1%

“not the best materials”

Top return reasons

Connectivity-Overall33%

Compatibility-Overall24%

Functionality-Overall11%

Socket/Port/Plug9%

Advertised Vs Actual Product6%

Value For Money3%

Defective Material/Parts3%

Size-Overall3%

Smart Assistant Support1%

Range1%

Common questions

Is sonoff s31 profitable to sell on Amazon United States?: The niche generates $32K/yr across 6 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -11.5%. Flapen's verdict: Skip it (38/100).
How competitive is the sonoff s31 niche?: 2 brands and 7 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in sonoff s31?: Top complaints mined from reviews: Connectivity-Overall, Design-Overall, Assembly/Installation. The return rate is 2.9%.
When does demand for sonoff s31 peak?: Demand peaks in Aug–Sep–Oct–Nov–Dec; the busiest month runs 12.1× the quietest.
What does it cost to enter the sonoff s31 niche?: Listings span $8.74–$29.13; the average listing price is $16.84 (sweet spot $15–$100). The average incumbent carries 209 reviews — the moat a new listing must climb.

sonoff s31

sonoff s31 market data

Competition & brand share

Demand & seasonality

Top sonoff s31 products on Amazon

Top sellers

Newest

Trending

What buyers say about sonoff s31

What buyers love

What buyers complain about

Top return reasons

Common questions

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