---
title: "4 Oz Cups — $296K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/4-oz-cups"
last_updated: "2026-08-09T04:34:42.860Z"
locale: en
meta:
description: "Niche score 59/100 · $296K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 59/100 · $296K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "4 Oz Cups — $296K/yr Amazon US Niche (2026) - Flapen"
---
# **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.
Market size 51Growth 42Conversion 73Competition 59Returns 93Price range 75Avg price 78Brand share 72Review moat 45Quality gap 23
**Returns**
**Great****1.1%**
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**
**Good****6.8%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****62%**
top-5 brand share — brands hold most of the demand
**Competition**
**Good****50%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Good****$296K**
$296K/yr · 268K searches
**Review moat**
**Okay****2,005.1**
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**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
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 ~~](https://flapen.com/research/methodology)
## **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**
**33**
**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.
6K4KSpike '24Spike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/health-household/4-oz-cups/trend)
## **Top 4 oz cups search terms**
- **4 oz cups**64K/yr+19.0%4.9% conv. - **4oz cups**40K/yr+22.0%5.0% conv. - **4 oz plastic cups**26K/yr-1.0%4.6% conv. - **4 oz paper cups**22K/yr+10.1%7.6% conv. - **4oz paper cups**17K/yr+22.2%7.8% conv. - **4oz plastic cups**16K/yr+17.3%4.1% conv. - **4 oz cup**11K/yr+12.4%4.3% conv. - **4 ounce cups**9K/yr+22.5%5.3% conv. - **4oz cup**9K/yr-3.6%3.5% conv. - **4 oz disposable cups**9K/yr+11.4%5.8% conv. [**All search terms **](https://flapen.com/research/us/health-household/4-oz-cups/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.
0%5%$15K10%$30K15%$44K20%$59K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**Amazon Basics Mini Disposable Clear Plastic Cups 3oz 100 Count**Amazon Basics**$5.36**4.6★816 rev](https://www.amazon.com/dp/B0FD1153NS) [2![Freshware Coffee Cups 4 oz [100 Pack] Disposable Paper Cups for Mouthwash Cups Hot Paper Coffee Cup Ideal for Bathroom Cup](https://m.media-amazon.com/images/I/41nPCNl1LJL.jpg)**Freshware Coffee Cups 4 oz \[100 Pack\] Disposable Paper Cups for Mouthwash Cups Hot Paper Coffee Cup Ideal for Bathroom Cup**Freshware**$7.30**4.6★555 rev](https://www.amazon.com/dp/B0F4VKH2XF) [3**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**$14.38**4.6★195 rev](https://www.amazon.com/dp/B0D6R52VP9) [4![Freshware Plastic Portion Cups with Lids [4-Ounce 100 Sets] - Souffle Sampling Sauce Snack Dressing Jello Shot Cups Plastic Containers BPA Free](https://m.media-amazon.com/images/I/410BabuLhVL.jpg)**Freshware Plastic Portion Cups with Lids \[4-Ounce 100 Sets\] - Souffle Sampling Sauce Snack Dressing Jello Shot Cups Plastic Containers BPA Free**Freshware**$12.01**4.7★4,863 rev](https://www.amazon.com/dp/B07G9QCKR1) [5**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**$17.58**4.7★1,704 rev](https://www.amazon.com/dp/B088CXZHZK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Amazon Basics Mini Disposable Clear Plastic Cups 3oz 100 Count**Amazon Basics**$5.36**816 rev8mo ago](https://www.amazon.com/dp/B0FD1153NS) [**WhalePassing Espresso to Go Cups 200 Count Disposable Paper Cups Travel Cups 4oz Paper Cups White**WhalePassing**$10.25**85 rev8mo ago](https://www.amazon.com/dp/B0FXM9CZ2M) [**BYSNOW 5 oz Clear Plastic Cups 100 Count Disposable Cups for Party PP Small Plastic Cups for Party Cold Coffee Soda Juice**BYSNOW**$6.57**619 rev10mo ago](https://www.amazon.com/dp/B0FQ5GQ81B) [**Leafory 4oz Mini Paper Cups 100 Pack Disposable Bathroom Mouthwash Cups Espresso Extraction Cup for Home Office Bathroom Use Blue**Leafory**$8.89**60 rev11mo ago](https://www.amazon.com/dp/B0FMJCG4PQ) [![Freshware Coffee Cups 4 oz [100 Pack] Disposable Paper Cups for Mouthwash Cups Hot Paper Coffee Cup Ideal for Bathroom Cup](https://m.media-amazon.com/images/I/41nPCNl1LJL.jpg)**Freshware Coffee Cups 4 oz \[100 Pack\] Disposable Paper Cups for Mouthwash Cups Hot Paper Coffee Cup Ideal for Bathroom Cup**Freshware**$7.30**555 rev1y ago](https://www.amazon.com/dp/B0F4VKH2XF)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**GSI Enameled Steel Outdoors 4 fl. oz. Cup Green**GSI Outdoors**$5.05**4.4★**▲ 169%**](https://www.amazon.com/dp/B0007CU09W) [**BYSNOW 5 oz Clear Plastic Cups 100 Count Disposable Cups for Party PP Small Plastic Cups for Party Cold Coffee Soda Juice**BYSNOW**$6.57**4.6★**▲ 120%**](https://www.amazon.com/dp/B0FQ5GQ81B) [**WhalePassing Espresso to Go Cups 200 Count Disposable Paper Cups Travel Cups 4oz Paper Cups White**WhalePassing**$10.25**4.8★**▲ 95%**](https://www.amazon.com/dp/B0FXM9CZ2M) [**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**$14.38**4.6★**▲ 66%**](https://www.amazon.com/dp/B0D6R52VP9) [**HOMIP 100Pack 4oz Disposable Plastic Portion Cups with Lids Small Mini Sauce Cups for Portion Control Salad Dressing Cups Airtight and Stackable Condiment Cups for Party Holiday and Daily Use**HOMIP**$13.64**4.7★**▲ 62%**](https://www.amazon.com/dp/B0D6R3K1HH)
**~~View all trending →~~**
## **What buyers say about 4 oz cups**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**18%
*“Versatile size and value”*
**Quality-Overall**16%
*“Good quality cups”*
**Advertised Vs Actual Product**12%
*“Just what I needed”*
**Value For Money**11%
*“Best price”*
**Strength**8%
*“They dont feel flimsy”*
**Ease Of Use**6%
*“Easy to use”*
**Durability**2%
*“They are durable”*
**Oral Hygiene**2%
*“Perfect for brushing teeth”*
**Efficiency**2%
*“It works beautifully”*
**Measurement/Reading Accuracy**2%
*“Useful measuring cup”*
### **What buyers complain about **
**Size-Overall**20%
*“Won't fit”*
**Dispensing Mechanism**16%
*“Do not fit in standard dispense”*
**Strength**7%
*“not as strong as I wanted”*
**Thickness**5%
*“they are thin”*
**Shape/Style**5%
*“Poor Shape”*
**Ease Of Use**4%
*“difficult to use”*
**Leak-Proof**3%
*“leaky”*
**Measurement/Reading Accuracy**3%
*“They are difficult to see when filling the measuring glass up”*
**Quality-Overall**3%
*“Very cheaply made”*
**Adhesion/Stickiness**3%
*“Sticky”*
### **Top return reasons **
**Size-Overall**84%
**Advertised Vs Actual Product**4%
**Value For Money**4%
**Quality-Overall**2%
**Strength**1%
**Material Quality**1%
**Dispensing Mechanism**1%
**Functionality-Overall**1%
**Leak-Proof**1%
**Thin**0%
## **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.
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