Is opus profitable to sell on Amazon United States?

The niche generates $94K/yr across 9 tracked products. 90-day search growth is -10.9%. Flapen's verdict: Skip it (32/100).

How competitive is the opus niche?

6 brands and 14 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 98% of demand.

What do buyers complain about in opus?

Top complaints mined from reviews: Charging, Durability, Battery Life. The return rate is 3.1%.

When does demand for opus peak?

Demand peaks in Apr–Jul–Aug; the busiest month runs 3.6× the quietest.

What does it cost to enter the opus niche?

Listings span $34.91–$59.90; the average listing price is $47.82 (sweet spot $15–$100). The average incumbent carries 488 reviews — the moat a new listing must climb.

opus

Skip it

Brand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.

Price range

Incredible$34.91–$59.90

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

Avg price

Great$47.82

avg listing price — sweet spot $15–$100

Review moat

Great487.67

avg incumbent reviews — the moat a new listing must climb

Returns

Okay3.1%

return rate — above 5% kills the launch gate

Conversion

Okay2.1%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Market size

Bad$94K

$94K/yr · 92K searches

Growth

Bad-10.9%

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

Competition

Bad89%

top-5 click share — a locked-up shelf

Brand share

Bad98%

top-5 brand share — brand-locked demand

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, opus is a $94K/yr Amazon United States market (92K searches/yr). The top 5 brands hold 98% of demand. Demand peaks in Apr–Jul–Aug. Verdict: Skip it — 32/100.

Data updated Jul 22, 2026 · scored weekly · How we score niches

opus market data

Units sold / yr: 1K–1K; avg 0–100/product
Revenue / yr: $48K–$60K; units × avg price
Conversion rate: 2.1%
Avg BSR: #13,202
Page quality: 0%
Prime: 89%
Sponsored: 89%
Out of stock: 2.6%
Avg brand age: 51 months
Avg seller age: 174 days

Competition & brand share

The top 5 products capture 89% of clicks — a locked-up shelf that new listings rarely crack.

Brands

6 falling

Sellers

Top-5 brand share

98%

Top 20: 100%

Top-5 click share

89%

Top 20: 100%

Open market

Carlsan47%
OPUS34%
Generic10%
sofirn4%
Baby Einstein3%
Nitecore2%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -10.9% search growth over the last 90 days.

Peak months: Apr, Jul, Aug · busiest ÷ quietest = 3.6×

Open Trend

Top opus search terms

opus75K/yr -6.6%0.1% conv.
opus bt-c31007K/yr -5.7%4.0% conv.
opus battery charger6K/yr -32.7%3.3% conv.
opus bt-c34003K/yr -34.2%4.1% conv.

All search terms

Top opus 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 9 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Opus Battery Charger Analyzer Tester for Li-ion NiMH NiCd Rechargeable Batteries C3400 BT-C3400 AA AAA C 18650

Carlsan$58.044.6★256 rev

Opus BT - C3100 V2.2 Universal Battery Charger Speedy LCD Display Smart Battery Charger for Rechargeable Batteries Ni-MH Ni-Cd AA AAA 3.7V Li-ion 18650 26650 17670 14500 18490 (4-Slot)

OPUS$59.904.5★803 rev

BT-C2400 Battery Charger Analyzer Tester for AA AAA NiMH NiCd Rechargeable Batteries

OPUS$39.174.7★720 rev

Battery Charger Universal 4 Bay Charger with LCD Display(Version 3.0)

sofirn$43.474.6★191 rev

Generic Battery Charger Tester Analyzer for Household Rechargeable Batteries AA AAA NiMH NiCd Li-ion 18650 26650

Generic$50.174.7★13 rev

Newest

by launch date

Battery Charger Tester Analyzer for Household Rechargeable Batteries C3400

Generic$50.3217 rev

1y ago

Generic Battery Charger Tester Analyzer for Household Rechargeable Batteries AA AAA NiMH NiCd Li-ion 18650 26650

Generic$50.1713 rev

1y ago

Baby Einstein Ocean Explorers Go Opus Go 4-in-1 Crawl & Chase Activity Learning Toy Music and Lights Ages 3 Months to 5 Years

Baby Einstein$34.911,081 rev

2y ago

C3400 Battery Charger Tester Analyzer Li-ion NiMH NiCd with Car Adapter AAA AA C 18650

Generic$56.0971 rev

4y ago

Battery Charger Universal 4 Bay Charger with LCD Display(Version 3.0)

sofirn$43.47191 rev

5y ago

What buyers say about opus

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

What buyers love

Fun/Entertainment Experience29%

“Amazing toy”

Charging24%

“Great Battery Charger”

Quality-Overall5%

“The build quality feels solid”

Battery Life5%

“The charger provides lots of useful information about the battery”

Advertised Vs Actual Product5%

“Works as expected”

Color4%

“Bright colors”

Ease Of Use3%

“easy to use”

Value For Money3%

“not cheap”

Music/Lullaby2%

“The songs are enjoyable for him and me”

Flexibility2%

“features that allow a lot of flexibility”

What buyers complain about

Charging20%

“will not recharge”

Durability11%

“Not that Durable”

Battery Life9%

“Drains batteries”

Noise Level7%

“noticeable high pitched noise when charging”

Compatibility-Overall4%

“AA and AAA don't fit”

Value For Money4%

“Pricey”

Wheel Quality4%

“We didnt even get to use it a full day before it stopped working due to hair being stuck in the wheels”

Fun/Entertainment Experience2%

“I hate this toy”

Instructions/User Manual/Troubleshooting2%

“The manual leaves much to be desired”

Age Suitability2%

“My baby is too little”

Top return reasons

Functionality-Overall22%

Charging13%

Product Condition11%

Noise Level7%

Defective Material/Parts6%

Value For Money6%

Size-Overall5%

Advertised Vs Actual Product3%

Gifting Purpose3%

Battery Life3%

Common questions

Is opus profitable to sell on Amazon United States?: The niche generates $94K/yr across 9 tracked products. 90-day search growth is -10.9%. Flapen's verdict: Skip it (32/100).
How competitive is the opus niche?: 6 brands and 14 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 98% of demand.
What do buyers complain about in opus?: Top complaints mined from reviews: Charging, Durability, Battery Life. The return rate is 3.1%.
When does demand for opus peak?: Demand peaks in Apr–Jul–Aug; the busiest month runs 3.6× the quietest.
What does it cost to enter the opus niche?: Listings span $34.91–$59.90; the average listing price is $47.82 (sweet spot $15–$100). The average incumbent carries 488 reviews — the moat a new listing must climb.