# GemDelta

> GemDelta is a Pokemon card grading-arbitrage research platform built for Pokemon singles investing. It tracks Delta, the gap between a card's raw market price and its PSA 10 value, across the English Pokemon TCG catalog and surfaces cards and live listings where grading or regrading may be profitable.

GemDelta answers two questions for collectors and Pokemon singles investors: "Is this card worth grading?" and "Where are underpriced copies listed right now?" PSA 10 values prefer a 45-day median of dated last-sold comps when available, otherwise PriceCharting's PSA 10 market value. Marketplace coverage includes TCGplayer for raw supply and eBay US/UK for live slab and sealed listing scans.

GemDelta is built by the team behind the Slab Rehab YouTube channel.

## Pokemon singles investing

GemDelta approaches Pokemon singles investing through the grading lens: find raw singles priced well below their PSA 10 value, grade the strong candidates, and capture the Delta. Supply Watch is the singles-investing engine — it alerts when raw copies of watched singles are dumped below market, so investors can buy before the market corrects.

## Core features

- [Dashboard](https://gemdelta.com/): Free card discovery board ranked by Delta, raw price, PSA 10 value, gem rate, liquidity, and availability.
- [Supply Watch](https://gemdelta.com/supply-watch): Paid board for watched cards with TCGplayer supply changes, single-seller dumps, under-market deals, and alerts.
- [Crack & Repair](https://gemdelta.com/crack-repair): Paid board for graded-slab arbitrage, including repairable damaged slabs, TAG/firehose candidates, and PSA 9 to PSA 10 Delta.
- [Watchlists](https://gemdelta.com/watchlist): Build private card lists for free; paid plans activate Supply Watch slots and alerts.
- [Set hubs](https://gemdelta.com/sets): Public Pokemon TCG set index with ranked card pages.
- [The Weekly Buy-List](https://gemdelta.com/buylist): Email capture for the five best grading plays GemDelta catches each week.

## Pricing

- [Subscription](https://gemdelta.com/pricing): Basic $10/mo, Plus $25/mo, and Pro $100/mo, with annual plans available; tiers are based on active Supply Watch slot capacity.

## Reference

- [Help](https://gemdelta.com/help): Plain-English definitions for Price, PSA 10, Delta, gem rate, liquidity, availability, board behavior, and grading-risk caveats.
- [Affiliate disclosure](https://gemdelta.com/disclosure): Notes on eBay and TCGplayer affiliate links.
- [Sitemap](https://gemdelta.com/sitemap.xml): Search index for public pages and card/set URLs.