What We Use
Grade Signals uses item-level sold-comp evidence for user-selected cards: sold price, sold date, title, condition, grade, source, and related identifiers when available through approved provider APIs.
Data Use Policy
Sold comps are valuation evidence. Asking prices are reference only.
Grade Signals uses market data to help collectors and small dealers evaluate specific raw Pokemon cards before grading. The app is research-only and does not automate buying, bidding, checkout, offers, scraping, or seller targeting.
Why We Use It
Sold comps support raw-to-graded valuation, PSA 9 floor analysis, max raw buy, confidence labels, and audit trails that explain why a card is marked Buy, Negotiate, Pass, or Needs Review.
What We Do Not Do
Grade Signals does not automate purchases, bids, checkout, offers, reserve price estimation, seller profiling, broad category reporting, data resale, or public bulk access to provider data.
Active Listings
Active and sold eBay search links may be shown for manual research on eBay. Active asking prices are availability context only and are not treated as sold value in max raw buy or PSA profit calculations.
Operational Safeguards
- Provider API credentials are stored server-side and are not exposed in browser code.
- Sold-comp requests are tied to specific user-selected cards, not broad polling.
- Responses are cached to reduce repeat calls and provider load.
- Request volumes are rate-limited globally and per user.
- Infrastructure errors are retried cautiously and never in uncontrolled loops.
- Provider attribution is shown wherever sold-comp evidence is displayed.
- Research outputs distinguish sold comps, market estimates, and active asking prices.
- User-facing eBay search links are browser handoffs and are not scraped.
Research Disclaimer
Grade Signals is a research and decision-support tool. It is not financial, investment, legal, tax, grading, or collecting advice. Card prices, grading outcomes, fees, liquidity, and market conditions can change.
Grade Signals is not affiliated with eBay, Nintendo, The Pokemon Company, PSA, BGS, CGC, SGC, ACE, TAG, or PokeTrace. Trademarks and marketplace data references are used for card identification and valuation research.