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13th Birthday Decorations Girls

13th Birthday Decorations Girls shows low returns (0.5%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Flapen Score

59
Worth a look
Market size 49Growth 23Conversion 71Competition 77Returns 98Price range 14Avg price 21Brand share 80Review moat 84Quality gap 58
This niche Category average

Is 13th Birthday Decorations Girls profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, 13th Birthday Decorations Girls is a £271K/yr Amazon United Kingdom market (546K searches/yr). The top 5 brands hold 55% of demand. Demand peaks in Jan. Verdict: Worth a look — 59/100.

13th Birthday Decorations Girls: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved -4.9% over the last 90 days and 6.5% of searches end in a purchase.

£271K

revenue / yr

Units sold / yr40K
Search volume / yr-4.9%546K
Conversion rate6.5%
Avg price£7.65

Who owns the niche?

The top 5 brands hold 55% of demand, so 45% of the market is open.

45%

open market share

Brands · sellers40 · 67
Top-5 product click share38%
Open market45%
Avg brand age22 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.4★ — the gap to enter on.

0/100

page quality · 53 products

Sponsored placement89%
New entrants (1y)19· 0 succeeded
Avg rating4.4★
Avg reviews329

Top 13th Birthday Decorations Girls 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

Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.

£0£8K£16K£24K£33K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

40 falling

Sellers

67

Top-5 brand share

55%

Top 20: 83%

Top-5 click share

38%

Top 20: 70%

Open market

42%

  • YTEWFGL24%
  • Sheinly12%
  • OakTree7%
  • Beainfir6%
  • Tyqour5%
  • Yiiyyuuko3%

13th Birthday Decorations Girls demand & seasonality

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

Volume546KCVR6.5%Products53Brands40Top 5 Brands55%OOS Rate7.2%Rating4.4★Reviews329Avg BSR#390
13K8KSpike '24Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan · busiest ÷ quietest = 1.9×

Top 13th Birthday Decorations Girls search terms shoppers use

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

  • 13th birthday decorations231K/yr
  • 13th birthday58K/yr
  • 13 birthday decorations40K/yr
  • 13th birthday banner34K/yr
  • 13th birthday decorations boy29K/yr
  • teenager birthday decorations24K/yr
  • 13th birthday decorations girls19K/yr
  • 13 birthday12K/yr
  • happy 13th birthday banners10K/yr
  • 13 birthday banner10K/yr

What reviews say buyers love and hate about 13th Birthday Decorations Girls

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

What buyers love

90% of reviews
Quality-Overall32%

Great variety

Value For Money20%

Good value

Gifting Purpose14%

Birthday Gift

Advertised Vs Actual Product8%

As described

Color5%

Love this assortment & great colours

What buyers complain about

83% of reviews
Quality-Overall27%

Poor quality

Inflation/Deflation20%

Both the number balloons had numerous holes in so wouldnt inflate, very disappointed

Value For Money10%

expensive

Color10%

was darker than picture

Adhesion/Stickiness7%

Banners are terrible they are made from a material making it difficult to stick them up waste of money dont bother

13th Birthday Decorations Girls return rate & reasons

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

0.5%

Return rate

41%

Fixable by listing

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

1Color
21%
2Quality-Overall
14%
3Size-Overall
11%
4Inflation/Deflation
9%
5Defective Material/Parts
9%

Common 13th Birthday Decorations Girls questions

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

Flapen scores 13th Birthday Decorations Girls 59/100 on Amazon United Kingdom — Worth a look. The niche generates £271K/yr across 53 tracked products. 0 of 19 products launched in the last 360 days are still selling. Search demand moved -4.9% over the last 90 days.
Search demand for 13th Birthday Decorations Girls on Amazon United Kingdom peaks in Jan, where the busiest month runs 1.9× the quietest.