Is oneder the sea party decorations girl profitable to sell on Amazon United States?

The niche generates $75K/yr across 50 tracked products. 2 of 13 products launched in the last 360 days are still selling. 90-day search growth is +42.8%. Flapen's verdict: Worth a look (54/100).

How competitive is the oneder the sea party decorations girl niche?

40 brands and 48 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 41% of demand.

What do buyers complain about in oneder the sea party decorations girl?

Top complaints mined from reviews: Size-Overall, Quality-Overall, Advertised Vs Actual Product. The return rate is 4.0%.

When does demand for oneder the sea party decorations girl peak?

Demand peaks in Jun–Jul; the busiest month runs 3.5× the quietest.

What does it cost to enter the oneder the sea party decorations girl niche?

Listings span $6.87–$35.06; the average listing price is $19.49 (sweet spot $15–$100). The average incumbent carries 621 reviews — the moat a new listing must climb.

oneder the sea party decorations girl

Worth a look

Shows no brand lock-in (top 5 brands take 41% of clicks), but a small market ($75K/yr) keeps it on the watch list.

Brand share

Great41%

top-5 brand share — no brand owns this niche

Avg price

Great$19.49

avg listing price — sweet spot $15–$100

Competition

Great33%

top-5 click share — an open shelf

Review moat

Good620.68

avg incumbent reviews — the moat a new listing must climb

Price range

Good$6.87–$35.06

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

Growth

Good+42.8%

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

Returns

Okay4.0%

return rate — above 5% kills the launch gate

Conversion

Okay2.4%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Market size

Bad$75K

$75K/yr · 162K searches

Signals No Dominant Brand Low Review Barrier

According to Flapen's Amazon United States niche tracking, oneder the sea party decorations girl is a $75K/yr Amazon United States market (162K searches/yr). The top 5 brands hold 41% of demand. Demand peaks in Jun–Jul. Verdict: Worth a look — 54/100.

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

oneder the sea party decorations girl market data

Units sold / yr: 3K–3K; avg 0–100/product
Revenue / yr: $49K–$58K; units × avg price
Conversion rate: 2.4%
Avg BSR: #3,168
Page quality: 0%
Prime: 100%
Sponsored: 94%
Out of stock: 4.6%
Avg brand age: 26 months
Avg seller age: 189 days

Competition & brand share

Clicks spread well past the top 5 (33% combined) — an open shelf where new products get seen.

Brands

40 falling

Sellers

Top-5 brand share

41%

Top 20: 84%

Top-5 click share

33%

Top 20: 75%

Open market

54%

Fiesec11%
TITKKOP9%
Bezkega8%
Fexivo8%
Afniimyapt6%
Panouo5%

Demand & seasonality

Weekly Amazon search volume, last 56 weeks — +42.8% search growth over the last 90 days.

Peak months: Jun, Jul · busiest ÷ quietest = 3.5×

Open Trend

Top oneder the sea party decorations girl search terms

oneder the sea party decorations girl78K/yr +28.7%1.2% conv.
oneder the sea30K/yr +58.1%0.9% conv.
oneder the sea party decorations16K/yr +64.0%1.1% conv.
order the sea 1st birthday girl12K/yr +87.9%0.7% conv.
oneder the sea 1st birthday girl12K/yr +86.7%0.8% conv.
mermaid 1st birthday decorations6K/yr +48.5%1.0% conv.
one der the sea birthday7K/yr -17.1%0.7% conv.

All search terms

Top oneder the sea party decorations girl 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted

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

Top sellers

by 90-day click share

Oneder The Sea Party Decorations Girl 274psc Order The Sea 1st Birthday Girl Plates and Napkins Cups Banner Backdrop Tablecloth Cake Topper Balloon for One Der The Sea Birthday Supplies

Bezkega$28.404.5★148 rev

Fexivo 258 PCS Oneder The Sea Party Decorations Girl Hassle-Free One-stop Set for 25 Guests with Balloon Banner Backdrop Plates and Napkins Easy Setup for Girls First Birthday

Fexivo$30.374.7★24 rev

Fiesec Under The Sea 1 Year Old Party Decoration Ocean Animal First Birthday Party Decorations 1st Birthday Decorations for Girl Backdrop Banner Balloon Cake Topper Crown Box Cutouts

Fiesec$30.814.8★43 rev

TITKKOP Baby Girl 1st Birthday Clothes One Year Old Tulle Romper Sleeveless Bodysuit Cake Smash Outfits(mermaid 9-12M)

TITKKOP$15.924.8★2,461 rev

Oneder the Sea Photo Board Ocean Animal 1st Birthday Party Wooden Board Decorations 12 Monthly Milestone Picture Frame One Year Old Wood Sign Banner for Baby Keepsake Gift Supply(Fit 2x2.8 inch Photo)

Afniimyapt$14.195.0★2 rev

Newest

by launch date

Oneder the Sea Party Decorations Girls Under the Sea 1st Birthday Party Decorations Ocean Animal Mermaid First Birthday Supplies All-in-One Party Kit Party Balloon for 1st Birthday Decorations Girl

Kudapity$32.570 rev

1mo ago

Oneder The Sea Party Decorations Girl 274psc Order The Sea 1st Birthday Girl Plates and Napkins Cups Banner Backdrop Tablecloth Cake Topper Balloon for One Der The Sea Birthday Supplies

Bezkega$28.40148 rev

3mo ago

272Pcs Oneder the Sea Party Decorations Ocean Themed Party Decorations with Monthly Photo Banner Backdrop Plates Napkins Tablecloth Balloon Box Cake Topper for Boys Girls 1st Birthday Party

Pymurod$29.219 rev

3mo ago

My Mermaid First Year Photo Board Oneder The Sea Birthday Decoration Photo Frame 12 Monthly Baby Milestone Sign Ocean Nursery Decor for Girl Boy Gender Neutral Baby Keepsake Gifts-A18

Dualmins$15.971 rev

4mo ago

Afniimyapt$14.192 rev

5mo ago

What buyers say about oneder the sea party decorations girl

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

What buyers love

Color15%

“Color is accurate”

Quality-Overall15%

“Great quality and enough room”

Assembly/Installation11%

“Easy set up”

Value For Money7%

“Worth every penny”

Durability7%

“Beautiful and durable”

Design-Overall6%

“Great quality and lots of fun designs”

Advertised Vs Actual Product5%

“Looks like the picture”

Size-Overall5%

“Great size”

Ease Of Use4%

“Easy to use”

Brightness/Shine/Glow4%

“So cute and bright”

What buyers complain about

Size-Overall12%

“The plates are a little smaller than expected”

Quality-Overall12%

“Varying Levels of Quality”

Advertised Vs Actual Product8%

“False Advertisement”

Inflation/Deflation7%

“when inflated immediately started disenflating”

Color5%

“Colors dull, not as shown”

Durability5%

“tore off very easily”

Ease Of Use3%

“A little frustrating”

Adhesion/Stickiness3%

“Adhesive impossible to get off”

Smell3%

“There was a slight smell to them so please be aware”

Value For Money2%

“Looks expensive”

Top return reasons

Size-Overall24%

Advertised Vs Actual Product14%

Color13%

Value For Money11%

Quality-Overall6%

Inflation/Deflation4%

Material Quality4%

Defective Material/Parts4%

Functionality-Overall3%

Product Condition2%

Common questions

Is oneder the sea party decorations girl profitable to sell on Amazon United States?: The niche generates $75K/yr across 50 tracked products. 2 of 13 products launched in the last 360 days are still selling. 90-day search growth is +42.8%. Flapen's verdict: Worth a look (54/100).
How competitive is the oneder the sea party decorations girl niche?: 40 brands and 48 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 41% of demand.
What do buyers complain about in oneder the sea party decorations girl?: Top complaints mined from reviews: Size-Overall, Quality-Overall, Advertised Vs Actual Product. The return rate is 4.0%.
When does demand for oneder the sea party decorations girl peak?: Demand peaks in Jun–Jul; the busiest month runs 3.5× the quietest.
What does it cost to enter the oneder the sea party decorations girl niche?: Listings span $6.87–$35.06; the average listing price is $19.49 (sweet spot $15–$100). The average incumbent carries 621 reviews — the moat a new listing must climb.