collectibles-market-research
Installation
SKILL.md
Collectibles market research
Build evidence-backed briefs for trading cards and sports collectibles from public marketplace and PSA reference data. Keep identity, condition, grade, listing status, sale status, and source platform separate: an asking price is not a sale, and a PSA guide value is not a guaranteed market price.
When to use this skill
- Identify a card, set, subject, or certification and check PSA reference data.
- Compare live listings or auction lots across COMC, Fanatics Collect, ALT, Goldin, and Pristine Auction.
- Review sold-item evidence, auction history, market trends, or live-break inventory for a bounded collecting question.
- Build a short list of cards or lots with provenance, grade/condition, price, status, and the exact source URL.