Is legendairy milk cups profitable to sell on Amazon United States?

The niche generates $523K/yr across 22 tracked products. 4 of 4 products launched in the last 360 days are still selling. 90-day search growth is +8.8%. Flapen's verdict: Worth a look (57/100).

How competitive is the legendairy milk cups niche?

13 brands and 30 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 68% of demand.

What do buyers complain about in legendairy milk cups?

Top complaints mined from reviews: Leak-Proof, Value For Money, Size-Overall. The return rate is 4.6%.

When does demand for legendairy milk cups peak?

Demand peaks in May–Jun; the busiest month runs 1.7× the quietest.

What does it cost to enter the legendairy milk cups niche?

Listings span $11.76–$70.65; the average listing price is $41.09 (sweet spot $15–$100). The average incumbent carries 851 reviews — the moat a new listing must climb.

legendairy milk cups

Worth a look

Shows a sweet-spot price point ($41.09 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Avg price

Incredible$41.09

avg listing price — sweet spot $15–$100

Quality gap

Great4.0★

avg incumbent rating — lower means beatable quality

Price range

Great$11.76–$70.65

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

Review moat

Good850.68

avg incumbent reviews — the moat a new listing must climb

Market size

Good$523K

$523K/yr · 537K searches

Brand share

Good68%

top-5 brand share — brands hold most of the demand

Competition

Good52%

top-5 click share — leaders hold, buyers still browse

Growth

Okay+8.8%

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

Conversion

Okay2.4%

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

Returns

Okay4.6%

return rate — above 5% kills the launch gate

According to Flapen's Amazon United States niche tracking, legendairy milk cups is a $523K/yr Amazon United States market (537K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in May–Jun. Verdict: Worth a look — 57/100.

Data updated Jul 12, 2026 · scored weekly · How we score niches

legendairy milk cups market data

Units sold / yr: 13K–15K; avg 250–500/product
Revenue / yr: $514K–$616K; units × avg price
Conversion rate: 2.4%
Avg BSR: #144
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 40 months
Avg seller age: 124 days

Competition & brand share

The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.

Brands

13 flat

Sellers

Top-5 brand share

68%

Top 20: 100%

Top-5 click share

52%

Top 20: 97%

Open market

25%

NENESUPPLY27%
IVARONAL14%
Phanpy10%
SPECTRA9%
Legendairy Milk8%
PUMPMOM-US7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +8.8% search growth over the last 90 days.

Peak months: May, Jun · busiest ÷ quietest = 1.7×

Open Trend

Top legendairy milk cups search terms

legendairy milk collection cups129K/yr -5.0%1.5% conv.
legendary milk collection cups61K/yr +4.7%1.4% conv.
spectra collection cups59K/yr +15.8%3.1% conv.
spectra wearable cups40K/yr +38.5%3.1% conv.
silicone collection cups28K/yr +19.2%1.6% conv.
collection cups for spectra s121K/yr +30.6%2.4% conv.
spectra hands free cups18K/yr +42.2%3.3% conv.
spectra cara cups23K/yr -2.1%3.2% conv.
nenesupply collection cups9K/yr +81.6%4.9% conv.
silicone collection cups legendairy milk16K/yr -16.9%1.9% conv.

All search terms

Top legendairy milk cups 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 22 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Nenesupply Handsfree Wearable Breast Milk Collection Cups Compatible with Spectra S1 S2 Baby Buddha Momcozy V1 Lansinoh Pumps 24mm Silicone Flanges Replacement for Spectra Pump Parts 19mm 21mm inserts

NENESUPPLY$58.754.4★1,751 rev

Phanpy Wearable Breast Pump Milk Collector Cup New Cup Parts Original Phanpy Breast Pump Replacement Accessories 24 mm Flange and 20mm Insert Included 15 oz / 420 ml 2 Piece

Phanpy$30.574.1★441 rev

Spectra - CaraCups Wearable Milk Collection - Compatible with Spectra Breast Pumps - 24mm

SPECTRA$56.863.6★669 rev

Hands-Free Collection Cups Compatible with Spectra S1 S2 S9 Replace Breast Pump Kits Compatible with Spectra Breast Pumps 27mm Flange + 17/19/21/24mm Inserts

PUMPMOM-US$33.824.0★316 rev

Two Complete Sets Compatible with Spectra S1/S2/S9 Breast Pump Replacement Parts (24mm Two Complete Sets with 17/19/21mm Flanges)

CozyBabe$52.114.2★41 rev

Newest

by launch date

Wearable Silicone Milk Collection Cups 2 Pack Hands-Free Breast Milk Collector Soft Food-Grade Silicone Shells for Leaking Works with Baby Buddha Spectra Ameda MYA Zomee Freemie(24mm)

Bwcece$47.828 rev

4mo ago

Two Complete Sets Compatible with Spectra S1/S2/S9 Breast Pump Replacement Parts (24mm Two Complete Sets with 17/19/21mm Flanges)

CozyBabe$52.1141 rev

4mo ago

24mm CaraCups Wearable Milk Collection Hands-Free Collection Cups Compatible with Spectra S1/S2/9 Plus/SG Fit for Medela/Lansinoh/Zomee 99.9% Separable Electric Breast Pumps 2PC

IVARONAL$39.05235 rev

10mo ago

21mm CaraCups Wearable Milk Collection Hands-Free Collection Cups Compatible with Spectra S1/S2/9 Plus/SG Fit for Medela/Lansinoh/Zomee 99.9% Separable Electric Breast Pumps 2PC

IVARONAL$39.10235 rev

10mo ago

2 Pack CaraCups Wearable Milk Collection Sets and 10pcs Flange Inserts 13/15/17/19/21 * 2pc for Spectra S1 S2 9 Plus and SG Fit for Spectra/Medela/Lansinoh 24mm Wearable Breast Pump Collection Cup

IVARONAL$38.53143 rev

1y ago

What buyers say about legendairy milk cups

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

What buyers love

Ease Of Use14%

“Convenient when working”

Comfort-Overall11%

“So comfortable”

Quality-Overall10%

“Solid product, almost perfect”

Size-Overall8%

“The tubes are a good length”

Value For Money7%

“Great value for the money”

Ease Of Cleaning6%

“Easy to wash and clean”

Leak-Proof6%

“They dont leak”

Compatibility-Overall4%

“It is compatible”

Portability2%

“And they are obviously very portable to use on the go”

Ease Of Feeding2%

“feed baby at the same time its so perfect”

What buyers complain about

Leak-Proof24%

“it leaks”

Value For Money8%

“Expensive”

Size-Overall6%

“Huge”

Functionality-Overall4%

“not effective”

Durability4%

“Only worked for a week”

Quality-Overall4%

“Bad quality”

Comfort-Overall3%

“Not comfortable”

Ease Of Use3%

“difficult to position”

Ease Of Cleaning3%

“werent easy to clean”

Advertised Vs Actual Product2%

“NOT the same bottles”

Top return reasons

Size-Overall24%

Leak-Proof20%

Functionality-Overall14%

Defective Material/Parts9%

Advertised Vs Actual Product4%

Comfort-Overall3%

Product Condition3%

Breastfeeding Friendly3%

Value For Money3%

Motor Power2%

Common questions

Is legendairy milk cups profitable to sell on Amazon United States?: The niche generates $523K/yr across 22 tracked products. 4 of 4 products launched in the last 360 days are still selling. 90-day search growth is +8.8%. Flapen's verdict: Worth a look (57/100).
How competitive is the legendairy milk cups niche?: 13 brands and 30 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 68% of demand.
What do buyers complain about in legendairy milk cups?: Top complaints mined from reviews: Leak-Proof, Value For Money, Size-Overall. The return rate is 4.6%.
When does demand for legendairy milk cups peak?: Demand peaks in May–Jun; the busiest month runs 1.7× the quietest.
What does it cost to enter the legendairy milk cups niche?: Listings span $11.76–$70.65; the average listing price is $41.09 (sweet spot $15–$100). The average incumbent carries 851 reviews — the moat a new listing must climb.