CGC Population Report: Master Deck Build Box EX
17 cards graded by CGC · 8 gem 10s · census updated 2026-08-03
| Card | Total pop | Gem 10 | Gem rate | CGC 10 value | Raw value |
|---|---|---|---|---|---|
 Rayquaza EX#25 | 10 | 4 | 40.0% | $665.00 | $12.76 |
 Mewtwo EX#14 | 6 | 4 | 66.7% | $54.00 | $9.27 |
 Piplup#6 | 1 | 0 | 0.0% | — | $3.65 |
About this report
This population report shows how many copies of each Master Deck Build Box EX card CGC has graded, how many earned a perfect 10, and what those grades are worth today. A low gem rate means the card is hard to grade well — which is exactly what drives CGC 10 premiums. Census data updates monthly; values update nightly. Click any card for its full price history, every grade’s value, and population across all grading companies.