Speed Duel Demo Deck 2020 is a 2020 Yu-Gi-Oh! set with 21 cards on its set list. Its most valuable cards by market price include Power Up!, Copycat, and Dark Rabbit.
Prices as of Oct 12, 2026
| No. | Card | Rarity | Price |
|---|---|---|---|
| DEM6-EN001 | Meteor Dragon | Common | $0.52 |
| DEM6-EN002 | Jack's Knight | Common | $0.10 |
| DEM6-EN003 | Feral Imp | Common | $0.07 |
| DEM6-EN004 | Battle Ox | Common | $0.17 |
| DEM6-EN005 | Two-Headed King Rex | Common | $0.49 |
| DEM6-EN006 | Toon Alligator | Common | $0.35 |
| DEM6-EN007 | Dark Rabbit | Common | $0.55 |
| DEM6-EN008 | Queen's Knight | Common | $0.08 |
| DEM6-EN009 | Baby Dragon | Common | $0.10 |
| DEM6-EN010 | Dragon Zombie | Common | $0.47 |
| DEM6-EN011 | Basic Insect | Common | $0.09 |
| DEM6-EN012 | Gravekeeper's Spear Soldier | Common | $0.20 |
| DEM6-EN013 | Yomi Ship | Common | $0.17 |
| DEM6-EN014 | Copycat | Common | $0.63 |
| DEM6-EN015 | Shield & Sword | Common | $0.15 |
| DEM6-EN016 | Sword of Deep-Seated | Common | $0.20 |
| DEM6-EN017 | Block Attack | Common | $0.15 |
| DEM6-EN018 | Riryoku | Common | $0.10 |
| DEM6-EN019 | Reinforcements | Common | $0.23 |
| DEM6-EN020 | Windstorm of Etaqua | Common | $0.10 |
| DEM6-ENS01 | Power Up! | Common | $25.80 |