21st Birthday Cards for Her
21st Birthday Cards for Her shows low returns (0.1%), but prices mostly outside the sweet spot ($2.10–$11.62) keeps it on the watch list.
Flapen Score
Is 21st Birthday Cards for Her profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, 21st Birthday Cards for Her is a £140K/yr Amazon United Kingdom market (340K searches/yr). The top 5 brands hold 43% of demand. Verdict: Worth a look — 54/100.
21st Birthday Cards for Her: 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 -4.6% over the last 90 days and 9.6% of searches end in a purchase.
£140K
revenue / yr
Who owns the niche?
The top 5 brands hold 43% of demand, so 57% of the market is open.
57%
open market share
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 · 49 products
Top 21st Birthday Cards for Her products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
Belloxis 21st Birthday Gifts Grip Socks for Girls
- Price
- £5.67
- Rating
- 4.6/5
- Reviews
- 655
- Age
- 2y ago
UNMOT 21st Birthday Card for Her Happy 21st Card for Girl with Envelope
- Price
- £3.35
- Rating
- 4.5/5
- Reviews
- 127
- Age
- 1y ago
HOMANGA 21st Birthday Card 21st Birthday Gift for Men Women Vintage Back in 2005 Card with Envelope 21 Bday Card Decoration for Son Daughter Him Her 5×7 Inch
- Price
- £3.39
- Rating
- 4.6/5
- Reviews
- 54
- Age
- 11mo ago
21st Birthday Cards for Women Pink Glitter Balloons
- Price
- £3.36
- Rating
- 4.6/5
- Reviews
- 314
- Age
- 9mo ago
3D 21st Birthday Card with Red Heart Balloon for Her Daughter Sister Granddaughter | Happy 21st Birthday Gift Card for Women Blank Inside with Envelope (14x14 cm)
- Price
- £3.36
- Rating
- 4.5/5
- Reviews
- 83
- Age
- 8mo ago
Trending
90-day click momentum
21st Birthday Card for Men & Women 3D Pop Up Birthday Greeting Card Black & Gold 21 Years Old Birthday Decorations & Gifts for Him or Her Ideal for Son Daughter Sister and Special Cousin
- Price
- £6.10
- Rating
- 4.6/5
- Reviews
- 75
- Age
- 5mo ago
Me To You Tatty Teddy 21 Today Luxury Gold Embellished Birthday Card 6 X 9 Inches - Official Collection
- Price
- £2.10
- Rating
- 5.0/5
- Reviews
- 6
- Age
- 6mo ago
Belloxis 21st Birthday Gifts Grip Socks for Girls
- Price
- £5.67
- Rating
- 4.6/5
- Reviews
- 655
- Age
- 2y ago
21st Birthday Cards for Women Pink Glitter Balloons
- Price
- £3.36
- Rating
- 4.6/5
- Reviews
- 314
- Age
- 9mo ago
HOMANGA 21st Birthday Card 21st Birthday Gift for Men Women Vintage Back in 2005 Card with Envelope 21 Bday Card Decoration for Son Daughter Him Her 5×7 Inch
- Price
- £3.39
- Rating
- 4.6/5
- Reviews
- 54
- Age
- 11mo ago
Newest
by launch date21st Birthday Card for Men & Women 3D Pop Up Birthday Greeting Card Black & Gold 21 Years Old Birthday Decorations & Gifts for Him or Her Ideal for Son Daughter Sister and Special Cousin
- Price
- £6.10
- Rating
- 4.6/5
- Reviews
- 75
- Age
- 5mo ago
Me To You Tatty Teddy 21 Today Luxury Gold Embellished Birthday Card 6 X 9 Inches - Official Collection
- Price
- £2.10
- Rating
- 5.0/5
- Reviews
- 6
- Age
- 6mo ago
3D 21st Birthday Card with Red Heart Balloon for Her Daughter Sister Granddaughter | Happy 21st Birthday Gift Card for Women Blank Inside with Envelope (14x14 cm)
- Price
- £3.36
- Rating
- 4.5/5
- Reviews
- 83
- Age
- 8mo ago
YianHien 21st Birthday Card 3D Box Pop Up Birthday Card for Her
- Price
- £5.77
- Rating
- 4.7/5
- Reviews
- 231
- Age
- 9mo ago
Hierein 21st Birthday Card Pink 3D Pop Up 21st Birthday Cards for Her
- Price
- £5.85
- Rating
- 4.6/5
- Reviews
- 137
- Age
- 9mo ago
Competition: brands, sellers & click share
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.
Brands
35 falling
Sellers
67
Top-5 brand share
43%
Top 20: 87%
Top-5 click share
38%
Top 20: 73%
Open market
50%
- Belloxis11%
- Stuff49%
- HOMANGA9%
- UNMOT8%
- Virelle7%
- Me To You7%
21st Birthday Cards for Her demand & seasonality
Weekly search volume, with the niche's key stats alongside.
No pronounced peak months · busiest ÷ quietest = 1.6×
Top 21st Birthday Cards for Her search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- 21st birthday card172K/yr
- 21st birthday cards for her57K/yr
- 21st birthday cards for him31K/yr
- 21st birthday card for her18K/yr
- 21st birthday card for him15K/yr
- 21 birthday card10K/yr
- 21st birthday cards9K/yr
- 21st birthday card male8K/yr
- happy 21st birthday card5K/yr
- 21st birthday card for men6K/yr
What reviews say buyers love and hate about 21st Birthday Cards for Her
What buyers mention most, as a share of all reviews.
What buyers love
87% of reviews“Good quality card”
“Excellent value for money”
“Bright colours”
“a good size”
“Lovely Design”
What buyers complain about
89% of reviews“great card so much bigger than expected ty”
“This card is fairly average in terms of quality and design”
“yes it's pricey”
“The envelope is too dark to write on”
“the design is completely underwhelming”
21st Birthday Cards for Her return rate & reasons
Why buyers send it back, as a share of all return requests.
0.1%
Return rate
48%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common 21st Birthday Cards for Her questions
The questions sellers ask about this niche, answered from the tracked metrics.
Related niches
Same-category niches scoring near this one — the next ones worth researching.
Best Flapen score
The highest-scoring niches we track right now, across every category.
