Is 4 oz cups profitable to sell on Amazon United States?

The niche generates $296K/yr across 30 tracked products. 4 of 6 products launched in the last 360 days are still selling. 90-day search growth is +13.4%. Flapen's verdict: Worth a look (59/100).

How competitive is the 4 oz cups niche?

23 brands and 33 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 62% of demand.

What do buyers complain about in 4 oz cups?

Top complaints mined from reviews: Size-Overall, Dispensing Mechanism, Strength. The return rate is 1.1%.

When does demand for 4 oz cups peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the 4 oz cups niche?

Listings span $5.05–$44.73; the average listing price is $16.23 (sweet spot $15–$100). The average incumbent carries 2,005 reviews — the moat a new listing must climb.

4 oz cups

Worth a look

Shows low returns (1.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Great1.1%

return rate — above 5% kills the launch gate

Avg price

Great$16.23

avg listing price — sweet spot $15–$100

Price range

Great$5.05–$44.73

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

Conversion

Good6.8%

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

Brand share

Good62%

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

Competition

Good50%

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

Market size

Good$296K

$296K/yr · 268K searches

Review moat

Okay2,005.1

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+13.4%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, 4 oz cups is a $296K/yr Amazon United States market (268K searches/yr). The top 5 brands hold 62% of demand. Verdict: Worth a look — 59/100.

Data updated Jul 13, 2026 · scored weekly · How we score niches

4 oz cups market data

Units sold / yr: 20K–25K; avg 250–500/product
Revenue / yr: $325K–$406K; units × avg price
Conversion rate: 6.8%
Avg BSR: #310
Page quality: 0%
Prime: 93%
Sponsored: 87%
Out of stock: 4.0%
Avg brand age: 46 months
Avg seller age: 160 days

Competition & brand share

The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.

Brands

23 falling

Sellers

Top-5 brand share

62%

Top 20: 97%

Top-5 click share

50%

Top 20: 89%

Open market

34%

Freshware19%
Amazon Basics17%
HOMIP11%
Turbo Bee10%
TV TOPVALUE5%
WhalePassing5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +13.4% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top 4 oz cups search terms

4 oz cups64K/yr +19.0%4.9% conv.
4oz cups40K/yr +22.0%5.0% conv.
4 oz plastic cups26K/yr -1.0%4.6% conv.
4 oz paper cups22K/yr +10.1%7.6% conv.
4oz paper cups17K/yr +22.2%7.8% conv.
4oz plastic cups16K/yr +17.3%4.1% conv.
4 oz cup11K/yr +12.4%4.3% conv.
4 ounce cups9K/yr +22.5%5.3% conv.
4oz cup9K/yr -3.6%3.5% conv.
4 oz disposable cups9K/yr +11.4%5.8% conv.

All search terms

Top 4 oz 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Amazon Basics Mini Disposable Clear Plastic Cups 3oz 100 Count

Amazon Basics$5.364.6★816 rev

Freshware Coffee Cups 4 oz [100 Pack] Disposable Paper Cups for Mouthwash Cups Hot Paper Coffee Cup Ideal for Bathroom Cup

Freshware$7.304.6★555 rev

HOMIP 200PCS 4oz Disposable Plastic Portion Cups (No Lids) Small Mini Sauce Cups for Portion Control Salad Dressing Cups Airtight and Stackable Condiment Cups for Party Holiday and Daily Use

HOMIP$14.384.6★195 rev

Freshware Plastic Portion Cups with Lids [4-Ounce 100 Sets] - Souffle Sampling Sauce Snack Dressing Jello Shot Cups Plastic Containers BPA Free

Freshware$12.014.7★4,863 rev

Turbo Bee 4 oz Paper Cups 300 Pack Disposable Espresso Shot Cups Small Coffee Tasting Cups White Mini Paper Cups for Drink Samples Espresso Tea Snacks Office and Events

Turbo Bee$17.584.7★1,704 rev

Newest

by launch date

Amazon Basics Mini Disposable Clear Plastic Cups 3oz 100 Count

Amazon Basics$5.36816 rev

8mo ago

WhalePassing Espresso to Go Cups 200 Count Disposable Paper Cups Travel Cups 4oz Paper Cups White

WhalePassing$10.2585 rev

8mo ago

BYSNOW 5 oz Clear Plastic Cups 100 Count Disposable Cups for Party PP Small Plastic Cups for Party Cold Coffee Soda Juice

BYSNOW$6.57619 rev

10mo ago

Leafory 4oz Mini Paper Cups 100 Pack Disposable Bathroom Mouthwash Cups Espresso Extraction Cup for Home Office Bathroom Use Blue

Leafory$8.8960 rev

11mo ago

Freshware Coffee Cups 4 oz [100 Pack] Disposable Paper Cups for Mouthwash Cups Hot Paper Coffee Cup Ideal for Bathroom Cup

Freshware$7.30555 rev

1y ago

What buyers say about 4 oz cups

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

What buyers love

Size-Overall18%

“Versatile size and value”

Quality-Overall16%

“Good quality cups”

Advertised Vs Actual Product12%

“Just what I needed”

Value For Money11%

“Best price”

Strength8%

“They dont feel flimsy”

Ease Of Use6%

“Easy to use”

Durability2%

“They are durable”

Oral Hygiene2%

“Perfect for brushing teeth”

Efficiency2%

“It works beautifully”

Measurement/Reading Accuracy2%

“Useful measuring cup”

What buyers complain about

Size-Overall20%

“Won't fit”

Dispensing Mechanism16%

“Do not fit in standard dispense”

Strength7%

“not as strong as I wanted”

Thickness5%

“they are thin”

Shape/Style5%

“Poor Shape”

Ease Of Use4%

“difficult to use”

Leak-Proof3%

“leaky”

Measurement/Reading Accuracy3%

“They are difficult to see when filling the measuring glass up”

Quality-Overall3%

“Very cheaply made”

Adhesion/Stickiness3%

“Sticky”

Top return reasons

Size-Overall84%

Advertised Vs Actual Product4%

Value For Money4%

Quality-Overall2%

Strength1%

Material Quality1%

Dispensing Mechanism1%

Functionality-Overall1%

Leak-Proof1%

Thin0%

Common questions

Is 4 oz cups profitable to sell on Amazon United States?: The niche generates $296K/yr across 30 tracked products. 4 of 6 products launched in the last 360 days are still selling. 90-day search growth is +13.4%. Flapen's verdict: Worth a look (59/100).
How competitive is the 4 oz cups niche?: 23 brands and 33 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 62% of demand.
What do buyers complain about in 4 oz cups?: Top complaints mined from reviews: Size-Overall, Dispensing Mechanism, Strength. The return rate is 1.1%.
When does demand for 4 oz cups peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the 4 oz cups niche?: Listings span $5.05–$44.73; the average listing price is $16.23 (sweet spot $15–$100). The average incumbent carries 2,005 reviews — the moat a new listing must climb.