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TCGStudy
Sealed Market Research • Coverage Note No. 009 • FINAL
Oct 03 2026 • live + archived feed
Diamond & Pearl Block: 7 sets, 2007–2008
Coverage Initiation • Pokémon TCG • Sealed Product Desk

Diamond & Pearl Block: Sinnoh Deep Vintage: The $17,000 Tier

The complete sealed matrix: 10 SKUs plus 21 chase cards. Every product carries a verified ladder: quarterly 2024–2025 and monthly 2026 from TCGplayer’s archived daily feed, closed by today’s live pull. Nearly this entire block trades beyond the live feed: eleven grail boxes are carried on Monthly closes from eBay completed sales, spike-filtered and labeled. Loose packs and chase singles still print live on TCGplayer and are verified to the cent.
The crown
Mysterious Treasures Box $17,119eBay closes: Sinnoh’s heaviest
Gardevoir’s reign
Secret Wonders Box $12,500Stormfront $8,340 • Legends Awakened $7,335
The 2008 tier
Majestic Dawn $5,900Great Encounters $4,796 beside it
Honest gap
DP Base Box: no reliable seriestrades by private treaty: carried unpriced by desk mandate
Prepared, audited & time-stamped by TCG Study · Sealed Market Research Desk
Verified layer: 10 sealed SKUs + 21 chase cards, each with a 16-point verified ladder (quarterly ’24–’25, monthly ’26) from the archived TCGplayer daily feed + live Oct 3 pull
Auto-priced nightly · SERIAL PN–009–DP–080326 · Oct 03, 2026
verified (archived or live feed) estimated (pre-2024) MSRP baseline LINEARLOG 24H7D1M
PRICES AS OF Oct 03, 2026 · AUTO-REFRESHED NIGHTLY · FROM 21:30 UTC
HOW TO READ · +% MSRP = total gain since original retail · since ’24 = verified gain from the archived feed · 24H / 7D / 1M = market movement over the window selected above (tap to switch) · solid chart points = verified sales, hollow = estimates · est. close = thin-trade estimate from recent verified sales
DP1
Diamond & Pearl
Sinnoh begins: base boxes trade by private treaty
REL MAY 2007
DP2
Mysterious Treasures
The block’s crown: $17,100 sealed
REL AUG 2007
DP3
Secret Wonders
Gardevoir’s reign: $12,500 sealed
REL NOV 2007
DP4
Great Encounters
Darkrai arrives
REL FEB 2008
DP5
Majestic Dawn
The eeveelution set of its day
REL MAY 2008
DP6
Legends Awakened
Giratina and the LV.X engine
REL AUG 2008
DP7
Stormfront
Charizard returns: the DP goodbye
REL NOV 2008 • ERA SEND-OFF

Data & Method

LIVE LAYER: TODAY

Current prices come from TCGplayer’s daily market-price feed (via the public TCGCSV mirror), pulled per set and matched to each product’s exact ID: the same Market Price shown on the product page, to the cent.

ARCHIVE LAYER: 2024 → NOW

The entire TCGplayer feed is snapshotted daily and archived back to Feb 2024. First-of-month snapshots are extracted for every product, giving verified quarterly points for 2024–2025 and monthly points for 2026: TCGplayer’s own numbers on those exact dates.

LAUNCH-ERA LAYER: 2021 → 2024

Older history comes from monthly closes, computed from eBay completed sales. Every series is validated against the live feed before use, and a spike filter drops lone artifact months. eBay solds running slightly under TCGplayer market is the natural spread between venues.

DESK MANDATES  ·  Sales outrank asks, always: every source is transaction-based  ·  StockX excluded by mandate (ask-driven)  ·  Solid dots = verified to a dated record; hollow dots = estimated and labeled  ·  Every product links to its exact TCGplayer page  ·  Sources cross-validated where they meet