Find eBay niches before everyone else
SellyIndex analyses hundreds of listings in seconds and gives every niche a score — profit potential, demand heat, and competition index — so you only source what's worth your money.
vintage lego sets
200 listings · EBAY_US
How it works
Search a keyword
Enter any product or niche term. SellyIndex queries eBay live and fetches 100 current listings instantly.
Get 6 scores instantly
Profit, heat, competition, trust, freshness, and opportunity scores are computed in under 2 seconds.
Source with confidence
Use the opportunity score and competitor breakdown to decide whether to enter the niche or move on.
Everything you need to win on eBay
Live features today. AI superpowers on the roadmap. Built for serious resellers who want data, not guesswork.
Niche Discovery Engine
● LiveSearch any keyword across eBay's catalogue. The engine fetches 100 live listings and scores the niche across 6 dimensions in real-time.
Profit Score
● LiveEstimates net margin per unit using a tiered COGS model and eBay's real fee structure — Final Value Fee, payment processing, and insertion fees all included.
Heat / Trend Score
● LiveMeasures demand momentum from listing freshness, trust signals, and Promoted Listing activity. Surfaces what's hot right now, not yesterday.
Competition Score
● LiveAnalyses listing density, top-seller concentration, seller quality bar, and price homogeneity. Know how hard a niche is to crack before spending a cent.
Opportunity Score
● LiveOne number that answers 'should I sell this?'. Synthesises profit, trend, and competition into a single composite score from 0 to 100.
Competitor Intelligence
● LiveIdentify the top sellers in any niche with threat level ratings — High, Medium, Low — based on credibility, listing scale, and sales activity.
Product Watchlist
● LivePin any product and track how its score, price, and trust signals evolve over time. Snapshots stored automatically on every scan.
Multi-Marketplace
Coming SoonCurrently supporting EBAY_US. EBAY_UK, EBAY_DE, and EBAY_AU are next — giving you a global sourcing edge.
AI Niche Advisor
AI — Q3 2025Natural language niche research. Ask 'what should I sell with a $500 budget?' and receive ranked recommendations with full scoring breakdowns.
Price Trend Forecasting
AI — Q4 2025LSTM models trained on eBay historical data predict price movements 30 days ahead. Know where prices are heading before you source.
Smart Sourcing Alerts
Q3 2025Set a profit threshold and get notified the moment a niche crosses it. Zero noise — only the opportunities that match your exact criteria.
Bulk Import & Export
Q3 2025Export your niche and product database to CSV or Excel. Import supplier catalogues to bulk-score sourcing opportunities in seconds.
Your AI co-pilot for eBay reselling
We're building an AI layer on top of SellyIndex that goes beyond scores. Natural language research, price forecasting, automated sourcing alerts, and an advisor that learns your preferences over time.
Ask in plain English
"What should I sell with $500 targeting 30%+ margin?"
Price forecasting
LSTM models predict price trends 30 days ahead
Smart alerts
Get notified only when opportunities meet your exact criteria
SellyIndex AI
●Coming Q3 2025
Used by resellers who take data seriously
"Found a vintage lego niche with an 82 opportunity score. Sourced 40 units in a week. SellyIndex paid for itself 10× over."
Marcus T.
@marcust_resells
"The competition score is genius. Saved me from entering 3 saturated niches I'd have wasted weeks on. Now I only enter niches below 40."
Priya S.
@priya_flips
"Heat score + freshness together are a real edge. I see which niches are trending before the price spikes. Actually works."
Jordan K.
@jkflipshop
Start finding profitable niches today
No credit card required. Every scan gives you 6 scores, 100 listings deep.
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