---
title: "Katherine Pierce Costume — Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/katherine-pierce-costume"
last_updated: "2026-08-12T20:58:35.129Z"
locale: en
meta:
description: "Amazon product research for katherine pierce costume: $436/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for katherine pierce costume: $436/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Katherine Pierce Costume — Amazon US Product Research"
---
# **Katherine Pierce Costume**
**Skip it**
Prices mostly outside the sweet spot ($6.29–$14.37) — this niche doesn't clear our bar today.
Market size 1Growth 56Conversion 27Competition 33Returns 16Price range 0Avg price 33Brand share 34Review moat 73Quality gap 76
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****593.35**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Good****+29.6%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****84%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****65%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Okay****$10.01**
avg listing price — sweet spot $15–$100
**Conversion**
**Okay****2.2%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****7.5%**
return rate — above 5% kills the launch gate
**Market size**
**Bad****$5K**
$5K/yr · 24K searches
**Price range**
**Bad****$6.29–$14.37**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
## **Is katherine pierce costume profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, katherine pierce costume is a $5K/yr Amazon United States market (24K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 34/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **katherine pierce costume market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **1K–1K**
- avg 0–100/product
- **Revenue / yr**
- **$10K–$13K**
- units × avg price
- **Conversion rate**
- **2.2%**
- **Avg BSR**
- **#5,817**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **76%**
- **Out of stock**
- **4.0%**
- **Avg brand age**
- **50 months**
- **Avg seller age**
- **211 days**
## **Competition: brands, sellers & click share**
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▲rising
**Sellers**
**13**
**Top-5 brand share**
**84%**
Top 20: 100%
**Top-5 click share**
**65%**
Top 20: 100%
**Open market**
**12%**
- PRINCESS CUTENESS STORE37% - YouU17% - JinYu14% - Nackiy10% - PPX7% - LUREME4% - Open — no brand owns it (6 brands, 12%)
## **katherine pierce costume demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +29.6% search growth over the last 90 days.
23K18KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct · busiest ÷ quietest = 75.7×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/katherine-pierce-costume/trend)
## **Top katherine pierce costume products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$52420%$1K30%$2K40%$2K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**PRINCESS CUTENESS STORE Katherine Pierce Vampire Lapis Anti-Sunlight Pendant Necklace**PRINCESS CUTENESS STORE**$12.29**4.3★57 rev](https://www.amazon.com/dp/B07J3P811K) [2**JinYu 2 Pack Necklace and Daywalking Katherine Necklace Pendant Charm Necklace-Royal Blue with Transparent Box**JinYu**$9.07**4.4★112 rev](https://www.amazon.com/dp/B08MYV9YRJ) [3**Nackiy Long Black Opera Gloves for Women 1920s Satin Stretchy Elbow Length Party Gloves Costumes Bridal 20inch**Nackiy**$6.66**4.4★1,763 rev](https://www.amazon.com/dp/B0B8HKW6MD) [4**UoYu TFYU 2 Pcs The Vampire D.rs Elerna Opening Vervain Locket Pendant Necklaces Daywalking Katherine Necklace Family Crest Jewelry with Box**YouU**$10.08**4.4★1,674 rev](https://www.amazon.com/dp/B07XL2QHRQ) [5**PRINCESS CUTENESS STORE Katherine Pierce Vampire Victorian Cameo Pendant Necklace**PRINCESS CUTENESS STORE**$13.29**4.7★8 rev](https://www.amazon.com/dp/B0DVLPSW6D)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**BECKWJE Retro 80s Supernatural Stranger TV Necklace for Women - Friends Dont Lie Heart & Alphabet Wall Message Pendant 18+2 Stainless Steel Jewelry Gift**BECKWJE**$11.92**22 rev2mo ago](https://www.amazon.com/dp/B0GTMLT1RN) [**PRINCESS CUTENESS STORE Katherine Pierce Vampire Victorian Cameo Pendant Necklace**PRINCESS CUTENESS STORE**$13.29**8 rev1y ago](https://www.amazon.com/dp/B0DVLPSW6D) [**UOUYOO Vampire Teeth Fake Fangs for Cosplay Party Props Halloween Party Fangs Favors White Horror False Teeth Favors Masquerade Accessories Gift 17mm 15mm 13mm**UOUYOO**$7.04**364 rev2y ago](https://www.amazon.com/dp/B0CCDV8KS2) [**Nackiy Long Black Opera Gloves for Women 1920s Satin Stretchy Elbow Length Party Gloves Costumes Bridal 20inch**Nackiy**$6.66**1,763 rev3y ago](https://www.amazon.com/dp/B0B8HKW6MD) [**UoYu 21 pcs The Vampire Diaries Necklace Sticker Jewelry Set Daywalking Katherine color**YouU**$7.32**104 rev4y ago](https://www.amazon.com/dp/B09M9X5RC3)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**BECKWJE Retro 80s Supernatural Stranger TV Necklace for Women - Friends Dont Lie Heart & Alphabet Wall Message Pendant 18+2 Stainless Steel Jewelry Gift**BECKWJE**$11.92**4.8★**▲ 578%**](https://www.amazon.com/dp/B0GTMLT1RN) [**U7 Platinum Plated Charm Necklaces Heart Pendant Photo Locket Necklace for Women**U7**$14.37**4.2★**▲ 554%**](https://www.amazon.com/dp/B00XPI0RBQ) [**Nackiy Long Black Opera Gloves for Women 1920s Satin Stretchy Elbow Length Party Gloves Costumes Bridal 20inch**Nackiy**$6.66**4.4★**▲ 316%**](https://www.amazon.com/dp/B0B8HKW6MD) [**PRINCESS CUTENESS STORE Katherine Pierce Vampire Victorian Cameo Pendant Necklace**PRINCESS CUTENESS STORE**$13.29**4.7★**▲ 91%**](https://www.amazon.com/dp/B0DVLPSW6D) [**PPX 5 Pcs Vampire necklaces earrings and bracelet - Daywalking Katherine Necklace -Verbena Necklace Chain Can Open Silver- with Transparent Storage Box**PPX**$10.57**4.3★**▲ 80%**](https://www.amazon.com/dp/B082CHY52M)
**~~View all trending →~~**
## **What reviews say buyers love and hate about katherine pierce costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**16%
*“Good quality necklace”*
**Advertised Vs Actual Product**8%
*“everything looked just as expected”*
**Durability**7%
*“is very durable”*
**Size-Overall**6%
*“Great fit”*
**Value For Money**6%
*“The price was reasonable”*
**Chain/Key Quality**6%
*“Has a little adjustable section on the chain which is great as well”*
**Soft Feel**5%
*“Soft”*
**Comfort-Overall**5%
*“Elegant and comfortable”*
**Color**5%
*“The blue is beautiful”*
**Stitch/Finish/Polish**4%
*“I saw no flaws in the finish”*
### **What buyers complain about **
**Quality-Overall**21%
*“I think they look a little cheap”*
**Size-Overall**13%
*“Bigger than I expected”*
**Gap/Hole**8%
*“Arrived with a hole in them”*
**Chain/Key Quality**6%
*“One of the Chains break easily”*
**Advertised Vs Actual Product**5%
*“Elena's necklace doesn't like the photo”*
**Value For Money**4%
*“Don't waste your money”*
**Functionality-Overall**4%
*“Did not work for me”*
**Adhesion/Stickiness**4%
*“Couldnt stick lol”*
**Brightness/Shine/Glow**4%
*“I wish it had more shine and substance”*
**Thickness**4%
*“the fingers are thicker”*
### **Top return reasons **
**Size-Overall**43%
**Length**10%
**Arm Fit**8%
**Material Quality**8%
**Quality-Overall**4%
**Wrist Fit**4%
**Defective Material/Parts**2%
**Advertised Vs Actual Product**2%
**Color**2%
**Thin**2%
## **Common katherine pierce costume questions**
- **Is katherine pierce costume profitable to sell on Amazon United States?**
- The niche generates $5K/yr across 17 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +29.6%. Flapen's verdict: Skip it (34/100).
- **How competitive is the katherine pierce costume niche?**
- 12 brands and 13 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 84% of demand.
- **What do buyers complain about in katherine pierce costume?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Gap/Hole. The return rate is 7.5% — above our launch gate.
- **When does demand for katherine pierce costume peak?**
- Demand peaks in Sep–Oct; the busiest month runs 75.7× the quietest.
- **What does it cost to enter the katherine pierce costume niche?**
- Listings span $6.29–$14.37; the average listing price is $10.01 (sweet spot $15–$100). The average incumbent carries 593 reviews — the moat a new listing must climb.
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