sigma
Skip itPricing outside the sweet spot ($507.72 avg) — this niche doesn't clear our bar today.
Market size
Incredible$3.6M$3.6M/yr · 326K searches
Returns
Good2.1%return rate — above 5% kills the launch gate
Review moat
Good1,000.86avg incumbent reviews — the moat a new listing must climb
Competition
Okay62%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Conversion
Okay2.2%search→purchase rate — share of searches ending in a sale
Growth
Okay+0.1%90-day search growth — must beat 0% to launch
Brand share
Bad97%top-5 brand share — brand-locked demand
Price range
Bad$14.81–$1565.53cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Bad$507.72avg listing price — sweet spot $15–$100
According to Flapen's Amazon United States niche tracking, sigma is a $3.6M/yr Amazon United States market (326K searches/yr). The top 5 brands hold 97% of demand. Verdict: Skip it — 41/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
sigma market data
- Units sold / yr
- 6K–8K
- avg 250–500/product
- Revenue / yr
- $3.0M–$4.1M
- units × avg price
- Conversion rate
- 2.2%
- Avg BSR
- #191
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 90%
- Out of stock
- 1.5%
- Avg brand age
- 60 months
- Avg seller age
- 162 days
Competition & brand share
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.Brands
7 rising
Sellers
120
Top-5 brand share
97%
Top 20: 100%
Top-5 click share
62%
Top 20: 99%
Open market
1%
- Sigma40%
- Gorilla Mind28%
- Sigma Beauty26%
- Sony2%
- Jocko Fuel2%
- Tamron2%
- Open — no brand owns it (1 brand, 1%)
Demand
Weekly Amazon search volume, last 45 weeks — +0.1% search growth over the last 90 days.Top sigma search terms
- sigma117K/yr
- sigma lens46K/yr
- sigma beauty32K/yr
- sigma e mount lens18K/yr
- sigma lens for sony14K/yr
- gorilla mind sigma9K/yr
- sigma lenses9K/yr
- sigma sony lens6K/yr
- sigma eyeshadow primer11K/yr
- sigma gorilla mind6K/yr
Top sigma 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.
All 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Gorilla Mind Sigma Testosterone Booster - Made with Tongkat Ali and Fadogia Agrestis Extract to Support Higher Testosterone Level (120 Capsules)
Gorilla Mind$45.754.5★492 rev
Sigma Beauty Womens Spectrum Color-Correcting Duo Light to Medium One Size
Sigma Beauty$25.734.2★351 rev
Sigma 17-40mm F1.8 DC | Art for Sony E Black
Sigma$907.214.7★50 rev
Sigma Beauty Eyeshadow Base Primer (Persuade - Light Pink Beige Matte) Professional Grade Eye Primer Crayon w/Sleek Retractable Tip for Long-Lasting Makeup & All-Day Color Payoff Prevents Creasing
Sigma Beauty$26.754.2★1,021 rev
24-70mm F2.8 DGDN II for Sony E
Sigma$1062.754.5★365 rev
Newest
by launch date
Sigma Beauty Vintage Radiance Highly Pigmented Eyeshadow Palette Colorful Eye Shadow Palette with Matte Shimmer & Metallic Shades Professional Eye Makeup Kit for Blending & Bold Looks
Sigma Beauty$64.374 rev
Sigma 17-40mm F1.8 DC | Art for Sony E Black
Sigma$907.2150 rev
Sigma 24-70mm f/2.8 DG DN II Art Lens for Sony E Bundle with Backpack Multi Coated UV Lens Filter LensPen Cleaner Cap Tether and Cleaning Kit Sigma 4-Year Limited Warranty
Sigma$1265.8342 rev
Sigma 24-70mm f2.8 DG DN II Art Lens Sony E Full Frame Format Six SLD Elements Rounded 11-Blade Godox Flash TT350S Mini 64GB Extreme PRO Memory Card & Waith Cleaning Cloth (Bundle Set)
Sigma$1258.7566 rev
24-70mm F2.8 DGDN II for Sony E
Sigma$1062.75365 rev
Trending
90-day click momentumSigma Beauty Vintage Radiance Highly Pigmented Eyeshadow Palette Colorful Eye Shadow Palette with Matte Shimmer & Metallic Shades Professional Eye Makeup Kit for Blending & Bold Looks
Sigma Beauty$64.374.4★
Sigma 24-70mm f/2.8 DG DN II Art Lens for Sony E Bundle with Backpack Multi Coated UV Lens Filter LensPen Cleaner Cap Tether and Cleaning Kit Sigma 4-Year Limited Warranty
Sigma$1265.834.5★
Sigma 17-40mm F1.8 DC | Art for Sony E Black
Sigma$907.214.7★
Jocko Fuel Test Booster for Men - Natural Endurance Stamina & Strength Booster - Muscle Builder for Men with Ginger Root Shilajit & Tongkat Ali 120ct (30 Servings)
Jocko Fuel$31.934.2★
Sigma 6053820 Pull Tile Cutter 2B3 26 Inches
sigma$429.914.5★
What buyers say about sigma
What buyers praise and complain about, mined from review topics.What buyers love
“Absolutely love the lens”
“quality is top tier”
“Price is affordable”
“Color is great”
“The image quality is excellent”
“fast autofocus”
“Better energy levels”
“with great zoom”
“the colors blend so nicely with my skin tone”
“goes on easily”
What buyers complain about
“Truly awful lens”
“Not worth the money”
“Gave me vertigo”
“autofocus not the best”
“A bit front heavy”
“Doesnt last long at all”
“the card that is included in this bundle doesn't work”
“The only way i noticed the garlic strong odor is when i have it on an empty stomach”
“It lacks zoom”
“a tiny bit more thicker”
Top return reasons
Common questions
- Is sigma profitable to sell on Amazon United States?
- The niche generates $3.6M/yr across 21 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +0.1%. Flapen's verdict: Skip it (41/100).
- How competitive is the sigma niche?
- 7 brands and 120 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 97% of demand.
- What do buyers complain about in sigma?
- Top complaints mined from reviews: Lenses, Value For Money, Side Effects. The return rate is 2.1%.
- What does it cost to enter the sigma niche?
- Listings span $14.81–$1565.53; the average listing price is $507.72 (sweet spot $15–$100). The average incumbent carries 1,001 reviews — the moat a new listing must climb.