---
title: "18 Oz Plastic Cups — $65K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/18-oz-plastic-cups"
last_updated: "2026-08-08T01:18:39.553Z"
locale: en
meta:
description: "Niche score 49/100 · $65K/yr market · 54K searches/yr · $15.25 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $65K/yr market · 54K searches/yr · $15.25 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "18 Oz Plastic Cups — $65K/yr Amazon US Niche (2026) - Flapen"
---
# **18 oz plastic cups**
**Skip it**
A small market ($65K/yr) — this niche doesn't clear our bar today.
Market size 16Growth 53Conversion 79Competition 51Returns 98Price range 67Avg price 76Brand share 26Review moat 25Quality gap 21
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****7.9%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$15.25**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$4.72–$35.82**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Good****+25.0%**
90-day search growth — must beat 0% to launch
**Competition**
**Good****54%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Bad****4,326**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$65K**
$65K/yr · 54K searches
According to Flapen's Amazon United States niche tracking, 18 oz plastic cups is a $65K/yr Amazon United States market (54K searches/yr). The top 5 brands hold 89% of demand. Verdict: Skip it — 49/100.
Data updated Jul 13, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **18 oz plastic cups market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **$92K–$122K**
- units × avg price
- **Conversion rate**
- **7.9%**
- **Avg BSR**
- **#317**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **67%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **40 months**
- **Avg seller age**
- **141 days**
## **Competition & brand share**
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▼falling
**Sellers**
**79**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**54%**
Top 20: 96%
**Open market**
**8%**
- Amazon Basics39% - Hefty37% - SOLO6% - Qeirudu5% - Nicole Home Collection3% - Jycnolm2% - Open — no brand owns it (6 brands, 8%)
## **Demand & seasonality**
Weekly Amazon search volume, last 67 weeks — +25.0% search growth over the last 90 days.
1K750Prime Day '25Black Friday '25Spike '26 seasonAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/health-household/18-oz-plastic-cups/trend)
## **Top 18 oz plastic cups search terms**
- **18 oz plastic cups**24K/yr+35.7%6.2% conv. - **18oz plastic cups**13K/yr+4.3%6.9% conv. - **plastic cups 18 oz**7K/yr+25.4%9.6% conv. - **18 oz cups**5K/yr+24.7%6.2% conv. - **18 oz clear plastic cups**5K/yr+34.2%7.6% conv. [**All search terms **](https://flapen.com/research/us/health-household/18-oz-plastic-cups/search-terms)
## **Top 18 oz plastic 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%4%$3K8%$5K12%$8K16%$10K101001K10K100K 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 Disposable Red Plastic Party Cups BPA-Free 18oz for Birthdays BBQs and Events 120 Count**Amazon Basics**$10.82**4.7★5,340 rev](https://www.amazon.com/dp/B0D6SC4BCJ) [2**Amazon Basics Sturdy Disposable Plastic Party Cups for Cold Drinks Red 18oz 50 Count BPA-Free**Amazon Basics**$5.01**4.7★5,340 rev](https://www.amazon.com/dp/B0D6SMHQKN) [3**Hefty Party Perfect Clear Plastic Cups Large Clear Party Cups for Easy Cleanup and Large Gatherings Recyclable 18 Ounce 28 Count**Hefty**$5.79**4.8★127 rev](https://www.amazon.com/dp/B0D23N8G7C) [4**Hefty Party Perfect Clear Plastic Cups 18 Ounce 140 Count**Hefty**$13.07**4.8★1,760 rev](https://www.amazon.com/dp/B0F75RQRLP) [5**Amazon Basics Disposable Clear Plastic Cups for Cold Drinks BPA-Free Easy to Hold 16oz 50 Count**Amazon Basics**$4.80**4.7★6,269 rev](https://www.amazon.com/dp/B0D6SQFXF7)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Qeirudu 100 Pack 18 oz Round Bottom Clear Plastic Cups with Lids and Straws Disposable Iced Coffee Cups To Go Cups for Cold Drinks Smoothie Juice Milkshake**Qeirudu**$25.66**47 rev5mo ago](https://www.amazon.com/dp/B0GKDQD1PV) [**Jycnolm \[100 Sets - 18oz Round Bottom Clear Plastic Cups with Lids and Straws Disposable Iced Coffee Cups with Lids To Go Cold Drink Cups for Smoothies Juices Party Catering**Jycnolm**$26.08**65 rev7mo ago](https://www.amazon.com/dp/B0G2S6BM7K) [**Jycnolm 18 Oz Round Bottom Clear Plastic Cups with Sip Lids 50 Sets Disposable Iced Coffee Cups with Strawless Lids To Go Cold Drink Cups for Smoothies Juices Party Catering**Jycnolm**$17.31**56 rev9mo ago](https://www.amazon.com/dp/B0FWCDG16F) [**Qeirudu 18 Oz Round Bottom Clear Plastic Cups with Strawless Sip Lids 50 Pack Disposable Iced Coffee Cups To Go Cups for Cold Drinks Smoothie Juice Milkshake**Qeirudu**$18.24**84 rev11mo ago](https://www.amazon.com/dp/B0FLX1Z461) [**Hefty Party Perfect Clear Plastic Cups 18 Ounce 140 Count**Hefty**$13.07**1,760 rev1y ago](https://www.amazon.com/dp/B0F75RQRLP)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Jycnolm 18 Oz Round Bottom Clear Plastic Cups with Sip Lids 50 Sets Disposable Iced Coffee Cups with Strawless Lids To Go Cold Drink Cups for Smoothies Juices Party Catering**Jycnolm**$17.31**4.2★**▲ 235%**](https://www.amazon.com/dp/B0FWCDG16F) [**Qeirudu 100 Pack 18 oz Round Bottom Clear Plastic Cups with Lids and Straws Disposable Iced Coffee Cups To Go Cups for Cold Drinks Smoothie Juice Milkshake**Qeirudu**$25.66**4.4★**▲ 196%**](https://www.amazon.com/dp/B0GKDQD1PV) [![Freshware Clear Plastic Cups [100 Pack - 20 oz] Disposable Cups for Iced Coffee Smoothie Milkshake Cold Drinks](https://m.media-amazon.com/images/I/41Z-uFvlTGL.jpg)**Freshware Clear Plastic Cups \[100 Pack - 20 oz\] Disposable Cups for Iced Coffee Smoothie Milkshake Cold Drinks**Freshware**$12.48**4.6★**▲ 171%**](https://www.amazon.com/dp/B0DSLZSZVG) [**Jycnolm \[100 Sets - 18oz Round Bottom Clear Plastic Cups with Lids and Straws Disposable Iced Coffee Cups with Lids To Go Cold Drink Cups for Smoothies Juices Party Catering**Jycnolm**$26.08**4.3★**▲ 102%**](https://www.amazon.com/dp/B0G2S6BM7K) [**Nicole Home Collection 100 Count Disposable Plastic Cups Crystal Clear Durable PET 18 oz. BPA Free**Nicole Home Collection**$31.17**4.7★**▲ 75%**](https://www.amazon.com/dp/B089PTV68C)
**~~View all trending →~~**
## **What buyers say about 18 oz plastic cups**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Decent quality”*
**Value For Money**15%
*“Decent price”*
**Strength**15%
*“Seems sturdy”*
**Size-Overall**9%
*“Great size”*
**Color**7%
*“Colors are bright”*
**Durability**7%
*“Durable and cute”*
**Advertised Vs Actual Product**6%
*“As advertised”*
**Ease Of Use**5%
*“Easy to use”*
**Leak-Proof**3%
*“preventing any spills”*
**Thickness**1%
*“these puppies are thick”*
### **What buyers complain about **
**Size-Overall**14%
*“Not the right size”*
**Strength**10%
*“Little flimsy”*
**Thickness**8%
*“Not thick at all”*
**Quality-Overall**8%
*“Not very well made”*
**Leak-Proof**8%
*“they leak”*
**Ease Of Use**4%
*“The straws are so hard to open”*
**Value For Money**3%
*“Waste of Money”*
**Material Quality**3%
*“cheap cheap material”*
**Taste-Overall**3%
*“This was absolutely awful tasted horrible was stale and gross”*
**Advertised Vs Actual Product**3%
*“Not as pictured”*
### **Top return reasons **
**Size-Overall**56%
**Value For Money**11%
**Advertised Vs Actual Product**5%
**Thin**5%
**Quality-Overall**4%
**Color**3%
**Strength**3%
**Material Quality**3%
**Leak-Proof**1%
**Smell**1%
## **Common questions**
- **Is 18 oz plastic cups profitable to sell on Amazon United States?**
- The niche generates $65K/yr across 24 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is +25.0%. Flapen's verdict: Skip it (49/100).
- **How competitive is the 18 oz plastic cups niche?**
- 12 brands and 79 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in 18 oz plastic cups?**
- Top complaints mined from reviews: Size-Overall, Strength, Thickness. The return rate is 0.5%.
- **When does demand for 18 oz plastic cups peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the 18 oz plastic cups niche?**
- Listings span $4.72–$35.82; the average listing price is $15.25 (sweet spot $15–$100). The average incumbent carries 4,326 reviews — the moat a new listing must climb.
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