Most valuable World Championship 2004: GBA Promo cards

The most valuable World Championship 2004: GBA Promo card on Lilycove is Sinister Serpent (WC4-E002) at CA$99.76 (Market Price, as of 2026-11-04). The top 5 together come to CA$204.53.

1. Sinister Serpent (WC4-E002) – Prismatic Secret Rare: CA$99.76 (Market Price, 2026-11-04)
2. Harpie's Feather Duster (WC4-E003) – Prismatic Secret Rare: CA$70.32 (Market Price, 2026-11-04)
3. Kinetic Soldier (WC4-002) – Secret Rare: CA$20.55 (Market Price, 2026-11-04)
4. Slate Warrior (WC4-003) – Secret Rare: CA$9.62 (Market Price, 2026-11-04)
5. Fairy King Truesdale (WC4-001) – Super Rare: CA$4.28 (Market Price, 2026-11-04)

Prices are the headline price on each card page, in CAD, the same order as the set page's price sort. 5 of 6 cards have a recent price to rank; the rest are left out rather than guessed.