Sister Birthday Card Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Sister Birthday Card sales on Amazon US totaled 92,500 units in July 2026 (▲ 4.3% vs. the prior month), generating an estimated $789,706 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 47.6% of unit volume and 52.1% of revenue, while a typical listing is priced at $8.10. The keyword itself pulled 19,622 Amazon queries over the same period (▲ 4.1% MoM).
Zooming out to the 12-month window ending July 2026, the sister birthday card Top 50 moved 1,018,500 units and $9,456,874 in cumulative sales — an average of 84,875 units and $788,073 per month. Monthly throughput topped out at 92,500 units in July 2026 and dipped to 61,400 in May 2026, leaving the latest reading 13.2% higher than August 2025.
Sister Birthday Card Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
92.5K
▲ 4.3% MoM
Monthly Revenue 2026/07
$789.7K
▲ 2.5% MoM
Top 10 Market Share 2026/07
47.6%
Sister Birthday Card Market Share & Sales Concentration on Amazon US — July 2026
The most-sold sister birthday card listing on Amazon US in July 2026 is ASIN B0F88FJ56K (Brand: Ovrrcame), which sold 7,000 units at $8.44 apiece — equal to 7.6% of every unit tracked in this report and 17% ahead of the No. 2 listing.
The Top 10 ASINs account for 44,000 units and $411,300 in July 2026 — 47.6% of unit volume and 52.1% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Sister Birthday Card' on Amazon
July 2026
Is 47.6% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B0F88FJ56K
A little Birthday Toast to you - Funny Happy Birthday Gifts for Women, Men, Mom, Dad, Sister, Best Friend - Unique Birthday Decorations Crochet Toast Gift Card for Her Him Coworker Gifts Ideas
7K
▲ 16.7%vs. prior month
$66.4K
latest month
12-month trend
B07BJ68K16
Hallmark Birthday Cards with Envelopes, Assorted 12-Pack (Happy!) | Hand-embellished details with glitter and ribbon. White envelopes included. Premium paper stock., 4.7 x 6.8 in
6K
▲ 0.0%vs. prior month
$71.9K
latest month
12-month trend
B0CHRFTJ82
ROBBEAR Happy Birthday Pop Up Card with Birthday Age Design, DIY Card Highlight Birthday Milestone, 3D Birthday Gift Box with Detachable and Free Combination Numbers, A Unique Card for Daughter, Son, Mom, Dad, Friend
6K
▼ 40.0%vs. prior month
$32.3K
latest month
12-month trend
B0GTLPLH6Y
FANCYLUCKY Funny Birthday Card Gifts for Women Her Best Friend | Aging Humor Birthday Decorations for BFF Sister Coworker, Printed Message Inside with Envelope, Idea for Party Celebrations
5K
▲ 66.7%vs. prior month
$30.3K
latest month
12-month trend
B0CFQ78QPC
MZD8391 Pop Up Birthday Card with Music, Light, Firework For Men Women | Play Birthday Song, Fireworks & Lights Dance, Blowable Candle, 3D Musical Happy Birthday Cards Gift for Mom Kids Dad Wife
5K
▲ 25.0%vs. prior month
$48.9K
latest month
12-month trend
B0DY1KT858
Positive Crochet Taco Christmas Birthday Gifts for Women Men Self Care Card Teacher Back to School Fall Decoration for Home Adult Kids Son Mom Dad Daughter Sister Friend Coworkers Inspirational Gift
4K
▲ 0.0%vs. prior month
$38K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Sister Birthday Card Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Hallmark is the best-performing sister birthday card brand in July 2026, moving 9,000 units across 2 ASINs for 20.5% of Top 10 volume. MZD8391 follows with 8,000 units (18.2%), ahead of Ovrrcame on 7,000 units (15.9%).
Volume is spread across 8 brands, with the top three holding 54.5% between them. No single label controls the shelf, which usually leaves room for a well-differentiated listing to take share without outspending an incumbent. Average selling prices among the leaders run from $8.44 to $11.99, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Hallmark
2 ASINs in Top 10
20.5%
Units
9K
Revenue
$89.9K
Avg. price
$8.99
B07BJ68K16
$11.99·★4.6·9.2K revsHallmark Birthday Cards with Envelopes, Assorted 12-Pack (Happy!) | Hand-embellished details with glitter and ribbon. White envelopes included. Premium paper stock., 4.7 x 6.8 in
Units sold6KB081DLFT5D
$5.99·★4.8·2.4K revsHallmark Signature Birthday Card (Best Birthday Ever)
Units sold3K
MZD8391
2 ASINs in Top 10
18.2%
Units
8K
Revenue
$89.8K
Avg. price
$11.99
B0CFQ78QPC
$9.99·★4.7·5K revsMZD8391 Pop Up Birthday Card with Music, Light, Firework For Men Women | Play Birthday Song, Fireworks & Lights Dance, Blowable Candle, 3D Musical Happy Birthday Cards Gift for Mom Kids Dad Wife
Units sold5KB0DKJL29M8
$13.99·★4.6·1.9K revsMZD8391 Birthday Card with MUSIC LIGHTS, Pop Up Sunflower Bouquet For Women | 10 Inch Life Size, Play Birthday Song, Lights Dance, 3D Paper Forever Flower, Musical Birthday Cards Gift For Mom Wife
Units sold3K
Ovrrcame
1 ASIN in Top 10
15.9%
Units
7K
Revenue
$66.4K
Avg. price
$8.44
B0F88FJ56K
$8.44·★4.8·1.3K revsA little Birthday Toast to you - Funny Happy Birthday Gifts for Women, Men, Mom, Dad, Sister, Best Friend - Unique Birthday Decorations Crochet Toast Gift Card for Her Him Coworker Gifts Ideas
Units sold7K
Trending Sister Birthday Card Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B0FHW31JY5 booked 2K units at $6.99, with ▲ 0.0% MoM change. On the growth side, B0DTB8RGT2 leads positive momentum with ▲ 100.0% MoM growth on 2K units, with B0G2T7NZXW close behind at ▲ 100.0% MoM on 2K units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B0FHW31JY5
Birthday Cards for Women, Butterfly Pop Up Card Box | Happy Birthday Gifts Cards for Women, Daughter, Mom, Sister, Friend, Butterflies Greeting Card with Blank Notecard & Envelope
Price
$6.99
Rating
4.7
Reviews
1.2K
Latest month sales
B0DTB8RGT2
Funny Birthday Card for Women, Men, Friends! Hilarious Birthday Fairy Joke | Funny Message Inside, Professionally Printed, 5 x 7 Premium Cardstock, Envelope Included, Protective Sleeve, For Big Laughs!
Price
$7.98
Rating
4.9
Reviews
310
Latest month sales
B0G2T7NZXW
Funny Birthday Card for Women, Her & Friends! Hilarious Birthday Queen Joke | Funny Message Inside, Professionally Printed, 5 x 7 Premium Cardstock, Envelope Included, Protective Sleeve, For Big Laughs!
Unlock to view ASIN details and product titles
Price
$7.98
Rating
4.9
Reviews
223
Latest month sales
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