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13th Birthday Shirt

a small market ($21K/yr) — 13th Birthday Shirt doesn't clear our bar today.

Flapen Score

35
Skip it

Ranks 14,546 of 16,930 Clothing, Shoes & Jewelry niches · −10 vs the category median of 45

Market size 5Growth 16Conversion 17Competition 28Returns 82Price range 59Avg price 76Brand share 61Review moat 68Quality gap 19
This niche Category average · 16,930 niches

Is 13th Birthday Shirt profitable on Amazon?

According to Flapen's Amazon United States niche tracking, 13th Birthday Shirt is a $21K/yr Amazon United States market (104K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 35/100.

13th Birthday Shirt: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -18.3% over the last 90 days and 1.4% of searches end in a purchase.

$21K

revenue / yr

Units sold / yr3K
Search volume / yr-18.3%104K
Conversion rate1.4%
Avg price$15.22

Who owns the niche?

The top 5 brands hold 68% of demand, so 32% of the market is open.

32%

open market share

Brands · sellers20 · 22
Top-5 product click share68%
Open market32%
Avg brand age31 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 · 20 products

Sponsored placement95%
New entrants (1y)4· 0 succeeded
Avg rating4.7★
Avg reviews788

Top 13th Birthday Shirt 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 68% of clicks — established leaders, but buyers still shop beyond them.

$0$2K$4K$6K$9K101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

20 falling

Sellers

22

Top-5 brand share

68%

Top 20: 100%

Top-5 click share

68%

Top 20: 100%

Open market

28%

  • Kifredwo28%
  • Jeasona19%
  • ZXGXLAW9%
  • Belloxis8%
  • JTAMOHI5%
  • Juesly4%

13th Birthday Shirt demand & seasonality

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

Volume104KCVR1.4%Products20Brands20Top 5 Brands68%OOS Rate2.0%Rating4.7★Reviews788Avg BSR#1,108
4K3KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25SepDecMarJunAugNovMarMay

Peak months: Nov, Dec · busiest ÷ quietest = 2.5×

Top 13th Birthday Shirt search terms shoppers use

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

  • 13th birthday gifts for boys30K/yr
  • stuff for 13 year old boys20K/yr
  • cool things for 13 year old boys13K/yr
  • boys 13th birthday gifts10K/yr
  • good gifts for 13 year old boys7K/yr
  • things for 13 year olds boys9K/yr
  • 13 year old boys birthday gift771/yr
  • gifts for 13 year old boys trendy 202515K/yr

What reviews say buyers love and hate about 13th Birthday Shirt

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

What buyers love

86% of reviews
Gifting Purpose24%

Cute gift

Quality-Overall17%

very well made too

Fun/Entertainment Experience12%

my grandson had so much fun

Brightness/Shine/Glow12%

Lights up amazingly

Advertised Vs Actual Product7%

As advertised

What buyers complain about

81% of reviews
Durability23%

Fell apart

Size-Overall15%

Too small

Quality-Overall8%

Cheaply made

Inflation/Deflation6%

The ball doesn't come inflated

Value For Money6%

Kinda of expensive

13th Birthday Shirt return rate & reasons

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

1.7%

Return rate

45%

Fixable by listing

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

1Size-Overall
28%
2Quality-Overall
11%
3Value For Money
7%
4Advertised Vs Actual Product
6%
5Gifting Purpose
5%

Common 13th Birthday Shirt questions

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

Flapen scores 13th Birthday Shirt 35/100 on Amazon United States — Skip it. The niche generates $21K/yr across 20 tracked products. 0 of 4 products launched in the last 360 days are still selling. Search demand moved -18.3% over the last 90 days.
Search demand for 13th Birthday Shirt on Amazon United States peaks in Nov–Dec, where the busiest month runs 2.5× the quietest.