Skip to content

18 Oz Plastic Cups

a small market ($65K/yr) — 18 Oz Plastic Cups doesn't clear our bar today.

Flapen Score

49
Skip it

Ranks 7,059 of 14,768 Health & Household niches · on the category median

Market size 16Growth 53Conversion 79Competition 51Returns 98Price range 67Avg price 76Brand share 26Review moat 25Quality gap 21
This niche Category average · 14,768 niches

Is 18 Oz Plastic Cups profitable on Amazon?

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.

18 Oz Plastic Cups: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved +25.0% over the last 90 days and 7.9% of searches end in a purchase.

$65K

revenue / yr

Units sold / yr8K
Search volume / yr+25.0%54K
Conversion rate7.9%
Avg price$15.25

Who owns the niche?

The top 5 brands hold 89% of demand, so 11% of the market is open.

11%

open market share

Brands · sellers12 · 79
Top-5 product click share54%
Open market11%
Avg brand age40 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.7★ — the gap to enter on.

0/100

page quality · 24 products

Sponsored placement67%
New entrants (1y)4· 3 succeeded
Avg rating4.7★
Avg reviews4,326

Top 18 Oz Plastic Cups products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.

$0$3K$5K$8K$10K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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%)

18 Oz Plastic Cups demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume54KCVR7.9%Products24Brands12Top 5 Brands89%OOS Rate0.0%Rating4.7★Reviews4,326Avg BSR#317
1K750Prime Day '25Black Friday '25Spike '26AprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

No pronounced peak months · busiest ÷ quietest = 1.3×

Top 18 Oz Plastic Cups search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • 18 oz plastic cups24K/yr
  • 18oz plastic cups13K/yr
  • plastic cups 18 oz7K/yr
  • 18 oz cups5K/yr
  • 18 oz clear plastic cups5K/yr

What reviews say buyers love and hate about 18 Oz Plastic Cups

What buyers mention most, as a share of all reviews.

What buyers love

87% of reviews
Quality-Overall19%

Decent quality

Value For Money15%

Decent price

Strength15%

Seems sturdy

Size-Overall9%

Great size

Color7%

Colors are bright

What buyers complain about

65% of reviews
Size-Overall14%

Not the right size

Strength10%

Little flimsy

Thickness8%

Not thick at all

Quality-Overall8%

Not very well made

Leak-Proof8%

they leak

18 Oz Plastic Cups return rate & reasons

Why buyers send it back, as a share of all return requests.

0.5%

Return rate

69%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Size-Overall
56%
2Value For Money
11%
3Advertised Vs Actual Product
5%
4Thin
5%
5Quality-Overall
4%

Common 18 Oz Plastic Cups questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores 18 Oz Plastic Cups 49/100 on Amazon United States — Skip it. The niche generates $65K/yr across 24 tracked products. 3 of 4 products launched in the last 360 days are still selling. Search demand moved +25.0% over the last 90 days.
Search demand for 18 Oz Plastic Cups on Amazon United States is steady year-round — the busiest month runs 1.3× the quietest.