Skip to content

12th Birthday Decorations

12th Birthday Decorations shows low returns (0.5%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Flapen Score

58
Worth a look
Market size 16Growth 23Conversion 66Competition 96Returns 98Price range 13Avg price 22Brand share 91Review moat 90Quality gap 57
This niche Category average

Is 12th Birthday Decorations profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, 12th Birthday Decorations is a £63K/yr Amazon United Kingdom market (136K searches/yr). The top 5 brands hold 44% of demand. Demand peaks in Jan. Verdict: Worth a look — 58/100.

12th Birthday Decorations: 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 -3.8% over the last 90 days and 5.9% of searches end in a purchase.

£63K

revenue / yr

Units sold / yr8K
Search volume / yr-3.8%136K
Conversion rate5.9%
Avg price£7.96

Who owns the niche?

The top 5 brands hold 44% of demand, so 56% of the market is open.

56%

open market share

Brands · sellers60 · 92
Top-5 product click share17%
Open market56%
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 · 133 products

Sponsored placement94%
New entrants (1y)65· 1 succeeded
Avg rating4.4★
Avg reviews190

Top 12th Birthday Decorations 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 (17% combined) — an open shelf where new products get seen.

£0£632£1K£2K£3K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

60 rising

Sellers

92

Top-5 brand share

44%

Top 20: 82%

Top-5 click share

17%

Top 20: 43%

Open market

50%

  • JGIIIJLP10%
  • Aurmonigo10%
  • FSADASY10%
  • VUCDXOP8%
  • OakTree7%
  • Sroeeshee5%

12th Birthday Decorations demand & seasonality

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

Volume136KCVR5.9%Products133Brands60Top 5 Brands44%OOS Rate10.0%Rating4.4★Reviews190Avg BSR#1,063
4K3KSpike '25Spike '26AprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Jan · busiest ÷ quietest = 2.0×

Top 12th Birthday Decorations search terms shoppers use

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

  • 12th birthday decorations44K/yr
  • 12 birthday decorations24K/yr
  • 12th birthday decorations boy16K/yr
  • 12th birthday14K/yr
  • 12th birthday decorations for girls8K/yr
  • 12th birthday banner8K/yr
  • 12 year old birthday decorations6K/yr
  • happy 12th birthday banner6K/yr
  • 12 birthday5K/yr
  • 12 birthday banner4K/yr

What reviews say buyers love and hate about 12th Birthday Decorations

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

What buyers love

83% of reviews
Quality-Overall26%

It is well made

Value For Money13%

Worth the money

Color11%

Lovely colour

Gifting Purpose8%

A good gift

Design-Overall7%

Nice modern design for an early teen

What buyers complain about

93% of reviews
Quality-Overall28%

Garbage

Color13%

Colour mix not good

Inflation/Deflation12%

Balloons dont hold air

Value For Money12%

Not great value

Size-Overall11%

Not fit for purpose

12th Birthday Decorations return rate & reasons

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

0.5%

Return rate

34%

Fixable by listing

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

1Quality-Overall
25%
2Inflation/Deflation
19%
3Size-Overall
19%
4Color
10%
5Defective Material/Parts
7%

Common 12th Birthday Decorations questions

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

Flapen scores 12th Birthday Decorations 58/100 on Amazon United Kingdom — Worth a look. The niche generates £63K/yr across 133 tracked products. 1 of 65 products launched in the last 360 days are still selling. Search demand moved -3.8% over the last 90 days.
Search demand for 12th Birthday Decorations on Amazon United Kingdom peaks in Jan, where the busiest month runs 2.0× the quietest.