Is 13th birthday shirt profitable to sell on Amazon United States?

The niche generates $21K/yr across 20 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -18.3%. Flapen's verdict: Skip it (35/100).

How competitive is the 13th birthday shirt niche?

20 brands and 22 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 68% of demand.

What do buyers complain about in 13th birthday shirt?

Top complaints mined from reviews: Durability, Size-Overall, Quality-Overall. The return rate is 1.7%.

When does demand for 13th birthday shirt peak?

Demand peaks in Nov–Dec; the busiest month runs 2.5× the quietest.

What does it cost to enter the 13th birthday shirt niche?

Listings span $5.91–$28.20; the average listing price is $15.22 (sweet spot $15–$100). The average incumbent carries 788 reviews — the moat a new listing must climb.

13th birthday shirt

Skip it

A small market ($21K/yr) — this niche doesn't clear our bar today.

Returns

Great1.7%

return rate — above 5% kills the launch gate

Avg price

Great$15.22

avg listing price — sweet spot $15–$100

Review moat

Good787.55

avg incumbent reviews — the moat a new listing must climb

Brand share

Good68%

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

Price range

Good$5.91–$28.20

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

Competition

Okay68%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.4%

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

Growth

Bad-18.3%

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

Market size

Bad$21K

$21K/yr · 104K searches

Signals Low Review Barrier

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.

Data updated Jul 21, 2026 · scored weekly · How we score niches

13th birthday shirt market data

Units sold / yr: 2K–3K; avg 0–100/product
Revenue / yr: $30K–$38K; units × avg price
Conversion rate: 1.4%
Avg BSR: #1,108
Page quality: 0%
Prime: 100%
Sponsored: 95%
Out of stock: 2.0%
Avg brand age: 31 months
Avg seller age: 162 days

Competition & brand share

The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.

Brands

20 falling

Sellers

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%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -18.3% search growth over the last 90 days.

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

Open Trend

Top 13th birthday shirt search terms

13th birthday gifts for boys30K/yr -16.2%1.1% conv.
stuff for 13 year old boys20K/yr -14.3%0.1% conv.
cool things for 13 year old boys13K/yr +7.8%0.0% conv.
boys 13th birthday gifts10K/yr -13.0%1.4% conv.
good gifts for 13 year old boys7K/yr +43.3%0.2% conv.
things for 13 year olds boys9K/yr -73.9%0.0% conv.
13 year old boys birthday gift771/yr +60.0%0.0% conv.
gifts for 13 year old boys trendy 202515K/yr -96.4%0.0% conv.

All search terms

Top 13th birthday shirt 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 20 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Gifts for 13 Year Old Boys 13 Year Old Boy Birthday Gift Ideas Cool Game Theme 13th Yr Old Boy Gifts Son Nephew Grandson Brother Happy 13th Birthday Decorations with 20 Oz Tumbler Keychain Card

Kifredwo$22.074.7★87 rev

Jeasona Gifts for 13 Year Old Boy Teenage Boy Birthday Gifts Funny Gaming Socks

Jeasona$8.834.7★1,073 rev

ZXGXLAW Birthday Gifts for 13th Boys Girls Son Daughter Him Kids 13 Year Old Teenage Gamer Christmas Crew Funny Gaming Socks

ZXGXLAW$7.694.7★334 rev

Belloxis 13 Year Old Boy Gift Ideas: Cozy Comfy Crew Socks for Men Cotton Birthday Gifts

Belloxis$7.984.7★445 rev

JTAMOHI 8 Pcs Happy 13th Birthday Gifts for Boys 13 Year Old Boy Birthday Gifts Ideas with 20 Oz Tumbler Funny Socks Toilet Paper Teen Wallet Bracelet Keychain for Son Nephew Grandson Brother

JTAMOHI$28.204.8★147 rev

Newest

by launch date

Gifts for 13 Year Old Boys 13 Year Old Boy Birthday Gift Ideas Cool Game Theme 13th Yr Old Boy Gifts Son Nephew Grandson Brother Happy 13th Birthday Decorations with 20 Oz Tumbler Keychain Card

Kifredwo$22.0787 rev

6mo ago

Zocomi Graduation Gifts Initial Necklace for Men Boys American Flag USA Independence Day Fourth 4th of July Decorations Accessories Chain Jewelry Ideas Stuffers for Teen Teenage Kids Him Age Letter J

Zocomi$13.80368 rev

10mo ago

Smithtuy Funny 13th Birthday Card for Boys Girls 13 Year Old Birthday Gifts & Decorations for Daughter Son Niece Nephew Humorous 13th Birthday Card for Teenagers with Gen Z Slang Meme Design

Smithtuy$5.91301 rev

11mo ago

13th Birthday Decorations for Boys Handmade Crochet Alien Figure Teen Card

MAMAGIFTREE$12.68106 rev

11mo ago

Carselage 13 Year Old Boy Gifts 13th Birthday Gifts Decorations for Son Gamer Gifts for Teenage Boy Christmas Gift for Kids Nephew Grandson Brother

Carselage$19.23338 rev

1y ago

What buyers say about 13th birthday shirt

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

What buyers love

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”

Size-Overall4%

“The fit was fine”

Soft Feel4%

“Soft and cuddly”

Value For Money3%

“This was well worth the purchase”

Weight Light2%

“The weight is perfect”

Color2%

“lots of nice brighter color s just right for a teenager”

What buyers complain about

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”

Chain/Key Quality6%

“Chain needs work”

Brightness/Shine/Glow5%

“it wouldn't even light up at all”

Allergies4%

“Sticky coating that caused allergic reaction”

Hard Feel4%

“It feels very rough when put on”

Material Quality3%

“a ballpoint pen did not work very well on the material”

Top return reasons

Size-Overall28%

Quality-Overall11%

Value For Money7%

Advertised Vs Actual Product6%

Gifting Purpose5%

Inflation/Deflation5%

Defective Material/Parts4%

Functionality-Overall3%

Chain/Key Quality3%

Durability3%

Common questions

Is 13th birthday shirt profitable to sell on Amazon United States?: The niche generates $21K/yr across 20 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -18.3%. Flapen's verdict: Skip it (35/100).
How competitive is the 13th birthday shirt niche?: 20 brands and 22 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 68% of demand.
What do buyers complain about in 13th birthday shirt?: Top complaints mined from reviews: Durability, Size-Overall, Quality-Overall. The return rate is 1.7%.
When does demand for 13th birthday shirt peak?: Demand peaks in Nov–Dec; the busiest month runs 2.5× the quietest.
What does it cost to enter the 13th birthday shirt niche?: Listings span $5.91–$28.20; the average listing price is $15.22 (sweet spot $15–$100). The average incumbent carries 788 reviews — the moat a new listing must climb.