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53

sanrio birthday decorations

Worth a look

Shows a thin review moat (143 avg reviews), but weak search conversion (1.8%) keeps it on the watch list.

Market size 26Growth 29Conversion 23Competition 78Returns 85Price range 60Avg price 83Brand share 83Review moat 93Quality gap 24

Review moat

Great143.13

avg incumbent reviews — the moat a new listing must climb

Returns

Great1.5%

return rate — above 5% kills the launch gate

Brand share

Great52%

top-5 brand share — no brand owns this niche

Avg price

Great$18.22

avg listing price — sweet spot $15–$100

Competition

Great37%

top-5 click share — an open shelf

Price range

Good$4.97–$29.87

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

Growth

Okay+3.6%

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

Market size

Okay$105K

$105K/yr · 316K searches

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.8%

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

According to Flapen's Amazon United States niche tracking, sanrio birthday decorations is a $105K/yr Amazon United States market (316K searches/yr). The top 5 brands hold 52% of demand. Demand peaks in Aug–Sep. Verdict: Worth a look — 53/100.

Data updated Jul 23, 2026 · scored weekly · How we score niches

sanrio birthday decorations market data

Units sold / yr
6K–8K
avg 0–100/product
Revenue / yr
$109K–$146K
units × avg price
Conversion rate
1.8%
Avg BSR
#2,307
Page quality
0%
Prime
100%
Sponsored
69%
Out of stock
20.2%
Avg brand age
25 months
Avg seller age
145 days

Competition & brand share

Clicks spread well past the top 5 (37% combined) — an open shelf where new products get seen.

Brands

30 falling

Sellers

63

Top-5 brand share

52%

Top 20: 91%

Top-5 click share

37%

Top 20: 75%

Open market

44%

  • MLEDUY18%
  • BNFUO12%
  • PINUO12%
  • Lamden6%
  • Unique5%
  • Signreen5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +3.6% search growth over the last 90 days.
15K10KSpike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Aug, Sep · busiest ÷ quietest = 2.2×

Top sanrio birthday decorations search terms

  • hello kitty and friends birthday decorations104K/yr
  • sanrio birthday decorations95K/yr
  • kawaii birthday decorations29K/yr
  • sanrio party decorations19K/yr
  • sanrio birthday16K/yr
  • kawaii party decorations8K/yr
  • hello kitty and friends party decorations8K/yr
  • sanrio party7K/yr
  • hello kitty and friends birthday7K/yr
  • kawaii decorations5K/yr
All search terms

Top sanrio birthday decorations 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.

0%3%$3K6%$6K9%$9K12%$13K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about sanrio birthday decorations

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

What buyers love

Quality-Overall24%

“The bags are a good quality -”

Value For Money15%

“GREAT PRICE”

Advertised Vs Actual Product14%

“Just what I needed”

Color6%

“Cute colors”

Design-Overall6%

“Cute aesthetic”

Size-Overall4%

“Great size”

Fun/Entertainment Experience4%

“kids loved it”

Gifting Purpose3%

“Perfect for birthday gift bags”

Durability3%

“I love that they are durable”

Assembly/Installation2%

“Easy to assemble”

What buyers complain about

Quality-Overall17%

“However, the pins are extremely low quality”

Size-Overall15%

“Balloons are big”

Advertised Vs Actual Product9%

“Not as advertised”

Value For Money6%

“Underwhelming for the price”

Smell5%

“The plates were open and vent, the banner had ink smeared all over it, the balloons smelled toxic”

Adhesion/Stickiness4%

“Recommend for indoor when its windy they rip easily an didnt stick how they are suppose to”

Thickness4%

“The cardstock cake topper isn't thick”

Assembly/Installation4%

“- the banner is not pre assembled”

Durability3%

“They fell apart”

Taste-Overall2%

“Not so yummy”

Top return reasons

Size-Overall31%
Value For Money22%
Advertised Vs Actual Product15%
Quality-Overall6%
Color5%
Defective Material/Parts3%
Design-Overall2%
Adhesion/Stickiness2%
Product Condition2%
Material Quality1%

Common questions

Is sanrio birthday decorations profitable to sell on Amazon United States?
The niche generates $105K/yr across 45 tracked products. 6 of 15 products launched in the last 360 days are still selling. 90-day search growth is +3.6%. Flapen's verdict: Worth a look (53/100).
How competitive is the sanrio birthday decorations niche?
30 brands and 63 sellers compete. The top 5 products take 37% of clicks and top 5 brands hold 52% of demand.
What do buyers complain about in sanrio birthday decorations?
Top complaints mined from reviews: Quality-Overall, Size-Overall, Advertised Vs Actual Product. The return rate is 1.5%.
When does demand for sanrio birthday decorations peak?
Demand peaks in Aug–Sep; the busiest month runs 2.2× the quietest.
What does it cost to enter the sanrio birthday decorations niche?
Listings span $4.97–$29.87; the average listing price is $18.22 (sweet spot $15–$100). The average incumbent carries 143 reviews — the moat a new listing must climb.