Executive Summary

Resellers—roughly 500K small businesses that each spend about $40K on inventory annually—struggle to reliably source authenticated designer items at below-market prices and waste time on manual authentication, exposing them to counterfeit risk and tying up capital in slow-moving stock. This structural sourcing pain constrains margins and limits scaling for professional and semi-professional sellers. You could build a SaaS + marketplace that uses computer-vision authentication and similarity search to surface underpriced, vetted designer inventory, provide ML-driven pricing recommendations, and integrate with inventory/listing workflows so resellers can buy, verify, and list in far fewer steps. The product would include a live feed of vetted suppliers, API/plug-ins for common platforms, and a dashboard for sourcing alerts and risk scoring. The addressable market is roughly $20.0B/year (500K resellers × $40K), and rising consumer acceptance of pre-owned luxury plus the professionalization of reselling make this an attractive moment—the idea scores 88/100 on market attractiveness and 82/100 on revenue potential. Advances in computer vision have materially reduced the technical risk of automated authentication, improving timing for entry. You can stand out by combining high-accuracy CV authentication, similarity-driven discovery, and active supplier vetting rather than acting as a passive aggregator, creating measurable margin uplift for resellers. Key challenges will be achieving enterprise-grade accuracy, building supplier liquidity, and managing customer acquisition in a medium-competition landscape, but if those are solved the unit economics should be compelling.

Market Opportunity

Find underpriced authenticated designer inventory for resellers targets a $20.0B = 500K small resellers × $40K average annual inventory spend total addressable market with medium saturation and a year-over-year growth rate of 12% YoY — estimated resale and secondhand fashion growth (ThredUp Resale Report and industry estimates 2023-2025).

Key trends driving demand: Resale acceptance — consumer acceptance of pre-owned designer items is increasing, which raises demand and liquidity for resellers.; Professionalization of reselling — more resellers operate as small businesses and seek tooling to scale sourcing and inventory management.; Advances in computer vision — improved image models make automated authentication and similarity search commercially viable for luxury items.; Marketplace fragmentation — sellers list across many platforms, creating opportunities for aggregation and arbitrage tools that find underpriced listings..

Key competitors include The RealReal, StockX, eBay (and third-party reseller tools).

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Find underpriced authenticated designer inventory for resellers

Executive Summary

Market Validation

Market Opportunity

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