manage-tcg-collection

name	manage-tcg-collection
locale	caveman-ultra
source_locale	en
source_commit	82c77053
translator	Julius Brussee homage — caveman
translation_date	2026-04-26
description	Organize, track, and value a trading card game collection. Covers inventory methods, storage best practices, grade-based valuation, want-list management, and collection analytics for Pokemon, MTG, Flesh and Blood, and Kayou cards. Use when starting a new collection and setting up inventory tracking, cataloging an existing collection that has grown beyond casual knowledge, valuing a collection for insurance or sale, or deciding which cards to submit for professional grading based on value potential.
license	MIT
allowed-tools	Read Grep Glob WebFetch WebSearch
metadata	{"author":"Philipp Thoss","version":"1.0","domain":"tcg","complexity":"basic","language":"natural","tags":"tcg, collection, inventory, storage, valuation, pokemon, mtg, fab, kayou"}

Manage TCG Collection

Organize, inventory, value TCG collection → structured tracking + storage + data-driven valuation.

Use When

• New collection → set up tracking
• Existing collection grew past casual knowledge
• Value for insurance/sale/estate
• Manage want-lists + trade binders
• Decide grading candidates by value potential

In

• Required: Game(s) (Pokemon, MTG, FaB, Kayou)
• Required: Scope (entire / sets / specific cards)
• Optional: Current system (sheet, app, binder)
• Optional: Goal (sets, play, invest, nostalgia)
• Optional: Budget for supplies/grading

Do

Step 1: Inventory System

Tracking system matched to size.

1. Method by size:

Collection Size Guide:
+-----------+-------+-------------------------------------------+
| Size      | Cards | Recommended System                        |
+-----------+-------+-------------------------------------------+
| Small     | <200  | Spreadsheet (Google Sheets, Excel)         |
| Medium    | 200-  | Dedicated app (TCGPlayer, Moxfield,        |
|           | 2000  | PokeCollector, Collectr)                   |
| Large     | 2000+ | Database + app combo with barcode scanning |
+-----------+-------+-------------------------------------------+

2. Fields per card:
   • Identity: Set, num, name, variant (holo, reverse, full art)
   • Condition: Raw grade (NM, LP, MP, HP, DMG) or numeric
   • Qty: Copies owned
   • Location: Binder page, box label, slab
   • Acquisition: Date, price paid, source
   • Value: Market value at condition, last update
3. Set up system w/ fields
4. Cadence (weekly active, monthly stable)

→ Working system + fields, ready for entry. Matches scale.

If err: ideal app missing → sheet. Consistency > format. Sheet updated > app abandoned.

Step 2: Catalog

Enter cards into system.

1. Sort physically first:
   • By set
   • Within set, by num ascending
   • Variants w/ base
2. Enter:
   • Bulk where possible (barcode, set checklists)
   • Honest condition — over-grade → valuation err
   • Note provenance (signed, 1st ed, prizes)
3. Large → sessions:
   • One set/box per session
   • Mark progress
   • Random sample verify
4. Cross-ref set checklists → completion %

→ All cards entered w/ condition + location. Completion % known.

If err: too large → priority: rares first, bulk-enter commons w/ est qty. 80% accurate > none.

Step 3: Physical Storage

Store by value + use.

1. Storage tier system:

Storage Tiers:
+----------+---------------+----------------------------------------------+
| Tier     | Card Value    | Storage Method                               |
+----------+---------------+----------------------------------------------+
| Premium  | >$50          | Top-loader + team bag, or penny sleeve in    |
|          |               | magnetic case. Stored upright in a box.       |
| Standard | $5-$50        | Penny sleeve + top-loader or binder with      |
|          |               | side-loading pages.                          |
| Bulk     | <$5           | Row box (BCW 800-count or similar), sorted    |
|          |               | by set. No individual sleeves needed.         |
| Graded   | Any (slabbed) | Upright in graded card box. Never stack heavy.|
+----------+---------------+----------------------------------------------+

2. Env controls:
   • Cool, dry, dark (not attic/basement)
   • No direct sun, humidity, temp swings
   • Silica gel in boxes
3. Label all:
   • Box: contents (set, range, date)
   • Binder pages → location codes
   • Graded: ID matches digital
4. Update locations in system

→ All cards stored by tier w/ location in inventory. Premium protected, bulk accessible.

If err: no premium supplies → penny sleeve + top-loader min for >$10. Upgrade as available.

Step 4: Value Collection

Current market values.

1. Pricing source:
   • TCGPlayer Market Price: US (MTG, Pokemon)
   • CardMarket: EU
   • eBay Sold Listings: Rare/unique
   • PSA/BGS Price Guide: Graded
2. Update Standard + Premium values
3. Bulk → per-set bulk pricing
4. Summary:

Collection Value Summary:
+------------------+--------+--------+
| Category         | Count  | Value  |
+------------------+--------+--------+
| Graded cards     |        | $      |
| Premium ungraded |        | $      |
| Standard cards   |        | $      |
| Bulk cards       |        | $      |
+------------------+--------+--------+
| TOTAL            |        | $      |
+------------------+--------+--------+

5. Grading candidates: grade-premium > grading cost
   • Rule: grade if (graded value - raw) > 2x grading cost

→ Current valuation, per-card for significant + aggregate bulk. Grading candidates flagged.

If err: stale pricing → note date + source. Rare → multi-source median. Never trust outlier.

Step 5: Maintain + Optimize

Ongoing routines.

1. Updates (Step 1 cadence):
   • New acquisitions immediately
   • Premium quarterly, Standard semi-annually
   • Re-tier as values shift
2. Want-list:
   • Desired cards + max price
   • Cross-ref vs. trade binder
   • Price alerts if supported
3. Analytics:
   • Monthly value snapshots
   • Set completion %
   • Concentration risk (one card/set heavy)
4. Annual audit:
   • Physical vs. inventory random sample
   • Storage check (humidity, pests)
   • Re-eval grading candidates

→ Living system, current, supports buy/sell/grade/trade decisions.

If err: lapse → Premium values first, then new acquisitions. Know top values today.

Check

• System established w/ fields
• All cards cataloged + condition + location
• Storage matches tiers
• Env controls (cool, dry, dark)
• Valued w/ current prices + dates
• Grading candidates flagged w/ cost/benefit
• Maintenance cadence followed
• Want-list maintained

Traps

• Over-grade own cards: Collectors rate own +1-2 grades. Honest or use grade-tcg-card
• Ignore bulk: 800 commons @ $0.10 = $80. Track
• Bad env: Humidity + temp swings damage > handling. Env > sleeves
• Stale values: 6 months old → wildly off, esp. set release/ban
• No backup: Export CSV monthly. Photograph premium for insurance

→

• grade-tcg-card — structured grading
• build-tcg-deck — deck from inventory