SoloPrice Secondhand Resale Pricing API

A clean, queryable API for secondhand clothing sold prices for resellers and developers.

Problem

eBay's sold data sits behind a login wall, while Poshmark data is messy and often over a year old; resellers either manually page through listings or misprice based on stale comps.

Solution

Provide a query API and lightweight dashboard for sold prices by brand, category, and size, with cleaned, deduplicated data and freshness labels. Developers can embed it in sourcing tools; sellers can see a reasonable listing range at a glance.

Users

Secondhand clothing resellers, small developers building resale comparison tools, and secondhand e-commerce founders.

MVP

Cover 3-5 popular categories on Poshmark first; simple REST endpoints and price curves by brand/size; automated daily scrape-and-clean pipeline.

Revenue

Free tier of 100 queries/month; developer API with usage-based tiers from $19/month; $5/month desktop comp dashboard for sellers.

Why now

Resale keeps growing, yet pricing data remains locked behind logins and messy pages—clean data itself is valuable, and an indie dev can start with scrapers plus cleaning.