---
title: "Sigma Kappa — $0/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/sports-outdoors/sigma-kappa"
last_updated: "2026-07-21T17:41:42.845Z"
locale: en
meta:
description: "Niche score 29/100 · $0/yr market · 56K searches/yr · $27.56 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 29/100 · $0/yr market · 56K searches/yr · $27.56 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Sigma Kappa — $0/yr Amazon US Niche (2026) - Flapen"
---
# **sigma kappa**
**Skip it**
A small market ($0/yr) — this niche doesn't clear our bar today.
Market size 0Growth 0Conversion 0Competition 34Returns 83Price range 88Avg price 95Brand share 0Review moat 99Quality gap 18
**Review moat**
**Incredible****14.83**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Incredible****$27.56**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$7.99–$84.96**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Great****1.6%**
return rate — above 6% kills the launch gate
**Competition**
**Okay****64%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$0**
$0/yr · 56K searches
**Growth**
**Bad****-69.0%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****0.0%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, sigma kappa is a $0/yr Amazon United States market (56K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Aug–Sep–Oct. Verdict: Skip it — 29/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **sigma kappa market data**
- **Units sold / yr**
- **1K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$34K–$41K**
- units × avg price
- **Launch success**
- **—**
- 0 of 2 new (360d)
- **Conversion rate**
- **0.0%**
- **Avg BSR**
- **#65,398**
- **Page quality**
- **0%**
- **Prime**
- **78%**
- **Sponsored**
- **39%**
- **Out of stock**
- **1.5%**
- **Avg brand age**
- **59 months**
- **Avg seller age**
- **199 days**
## **Competition & brand share**
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**5 **—flat
**Sellers**
**6**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**64%**
Top 20: 98%
**Open market**
**0%**
- Sorority Shop68% - Go Greek Chic23% - Desert Cactus5% - Greekgear2% - Sorority Letters Shop1%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -69.0% search growth over the last 90 days.
3K2KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug, Sep, Oct · busiest ÷ quietest = 13.1×
[**Open Trend **](https://flapen.com/research/us/sports-outdoors/sigma-kappa/trend)
## **Top sigma kappa 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%10%$020%$030%$040%$0110100 Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Sorority Shop Sigma Kappa Paperclip Necklace SK 18K Gold Plated Sorority Gifts Necklace Long-Lasting Sigma Kappa Gifts for Women**Sorority Shop**$18.79**4.8★16 rev](https://www.amazon.com/dp/B0B4T9NRV2) [2**Sorority Shop Sigma Kappa Bracelet Glass Bead Bracelet with SK Name Beads and 18K Gold Accent Beads Greek Sorority Jewelry for Big Little Sorority Gifts**Sorority Shop**$14.87**4.9★13 rev](https://www.amazon.com/dp/B0B4DVPYJ3) [3**Sigma Kappa Block Letters Pocket T-Shirt (Medium) Mint**Go Greek Chic**$29.98**5.0★8 rev](https://www.amazon.com/dp/B07NYPTQBP) [4**Sorority Shop Sigma Kappa - Koala Pouch - Logo Design Adhesive cell phone wallet**Sorority Shop**$8.66**4.6★38 rev](https://www.amazon.com/dp/B01DE6PBF0) [5**Sigma Kappa Blue Daisy Hoodie (Large)**Go Greek Chic**$48.20**5.0★1 rev](https://www.amazon.com/dp/B0BT8GQRHH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Sigma Kappa Varsity Lightweight Mockneck Sweatshirt X-Large**Greekgear**$84.96**0 rev7mo ago](https://www.amazon.com/dp/B0G4CW6ZSW) [**Go Greek Chic Sigma Kappa Embroidered Classic Canvas Tote Bag - Violet**Go Greek Chic**$39.89**12 rev10mo ago](https://www.amazon.com/dp/B0FPGR2V39) [**Sigma Kappa Embroidered Hoodie with Camo Design - Ash - Small**Go Greek Chic**$44.42**13 rev1y ago](https://www.amazon.com/dp/B0DYKDB8M3) [**Sorority Shop Sigma Kappa Beach Towel- Lightweight Brand Design 64 x 30 Soft Microfiber Beach Towel Lightweight and Durable Sigma Kappa Towel Water Absorption Quick Dry**Sorority Shop**$16.25**1 rev1y ago](https://www.amazon.com/dp/B0DV1RCRT9) [**Sorority Shop Sigma Kappa Makeup Bag - Puffer Style with Sorority Letters Travel Cosmetic Bag with Zipper Closure Perfect Sigma Kappa Sorority Gifts for Women**Sorority Shop**$31.31**0 rev2y ago](https://www.amazon.com/dp/B0D9PFT6NX)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Sorority Shop Sigma Kappa Beach Towel- Lightweight Brand Design 64 x 30 Soft Microfiber Beach Towel Lightweight and Durable Sigma Kappa Towel Water Absorption Quick Dry**Sorority Shop**$16.25**5.0★**▲ 346%**](https://www.amazon.com/dp/B0DV1RCRT9) [**Sigma Kappa Block Letters Pocket T-Shirt (Medium) Mint**Go Greek Chic**$29.98**5.0★**▲ 300%**](https://www.amazon.com/dp/B07NYPTQBP) [**Sigma Kappa Varsity Lightweight Mockneck Sweatshirt X-Large**Greekgear**$84.96**0.0★**▲ 294%**](https://www.amazon.com/dp/B0G4CW6ZSW) [**Go Greek Chic Sigma Kappa Embroidered Classic Canvas Tote Bag - Violet**Go Greek Chic**$39.89**4.5★**▲ 258%**](https://www.amazon.com/dp/B0FPGR2V39) [**Kappa Sigma Quarter Zip Cadet Collar Sweatshirt - Kappa Sigma Fraternity Merchandise (M) Dark Heather**Sorority Letters Shop**$51.29**4.5★**▲ 237%**](https://www.amazon.com/dp/B0BKR634NW)
**~~View all trending →~~**
## **What buyers say about sigma kappa**
What buyers praise and complain about, mined from review topics.
### **Top return reasons **
**Size-Overall**33%
**Value For Money**33%
**Unsustainable Design**17%
**Design-Overall**17%
## **Common questions**
- **Is sigma kappa profitable to sell on Amazon United States?**
- The niche generates $0/yr across 23 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -69.0%. Flapen's verdict: Skip it (29/100).
- **How competitive is the sigma kappa niche?**
- 5 brands and 6 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 100% of demand.
- **When does demand for sigma kappa peak?**
- Demand peaks in Aug–Sep–Oct; the busiest month runs 13.1× the quietest.
- **What does it cost to enter the sigma kappa niche?**
- Listings span $7.99–$84.96; the average listing price is $27.56 (sweet spot $15–$100). The average incumbent carries 15 reviews — the moat a new listing must climb.
## **Related niches in Sports & Outdoors**
- 64 [**swim belt**](https://flapen.com/research/us/sports-outdoors/swim-belt)$291K/yr+177.3%**Worth a look**- 64 [**argentina jersey 2026 world cup**](https://flapen.com/research/us/sports-outdoors/argentina-jersey-2026-world-cup)$82K/yr>1,000%**Worth a look**- 64 [**slingshot**](https://flapen.com/research/us/sports-outdoors/slingshot)$3.5M/yr+36.6%**Launch it**- 64 [**resistance bands for working out**](https://flapen.com/research/us/sports-outdoors/resistance-bands-for-working-out)$20.3M/yr-2.0%**Worth a look**- 65 [**germany soccer jersey**](https://flapen.com/research/us/sports-outdoors/germany-soccer-jersey)$182K/yr>1,000%**Worth a look**- 65 [**swim bar**](https://flapen.com/research/us/sports-outdoors/swim-bar)$34K/yr+304.9%**Worth a look**[**All Sports & Outdoors niches **](https://flapen.com/research/us/sports-outdoors)