Most valuable Delta Species cards (2005)

The most valuable Delta Species card is Groudon ★ 111/113 at $1,010 for an ungraded Near Mint copy. The ten most valuable together come to $4,031, 66 % of the whole set's market value. Delta Species is a 113-card expansion in the EX series, released 2005/10/31. Prices are TCGplayer market values and move daily; graded copies sell above them. The full list is on the Delta Species card list.

Most valuable Delta Species cards
#	Card	No.	Rarity	Market
1	Groudon ★	111/113	Rare Holo Star	$1,010
2	Metagross ★	113/113	Rare Holo Star	$951.99
3	Umbreon δ	17/113	Rare Holo	$388.32
4	Mewtwo δ	12/113	Rare Holo	$385.33
5	Vaporeon ex	110/113	Rare Holo EX	$256.49
6	Flareon ex	108/113	Rare Holo EX	$249.99
7	Jolteon ex	109/113	Rare Holo EX	$209.95
8	Dragonite δ	3/113	Rare Holo	$207.79
9	Espeon δ	4/113	Rare Holo	$187.19
10	Jolteon δ	7/113	Rare Holo	$183.71
11	Rayquaza δ	13/113	Rare Holo	$163.65
12	Tyranitar δ	16/113	Rare Holo	$142.35
13	Latios δ	9/113	Rare Holo	$135.67
14	Latias δ	8/113	Rare Holo	$125.81
15	Flareon δ	5/113	Rare Holo	$121.32
16	Vaporeon δ	18/113	Rare Holo	$121.20
17	Ditto	36/113	Uncommon	$108.30
18	Gardevoir δ	6/113	Rare Holo	$92.75
19	Ditto	39/113	Uncommon	$81.05
20	Ditto	63/113	Common	$67.84
21	Ditto	40/113	Uncommon	$64.88
22	Ditto	37/113	Uncommon	$63.21
23	Ditto	35/113	Uncommon	$62.98
24	Metagross δ	11/113	Rare Holo	$62.95
25	Azumarill	114/113	Rare Secret	$62.66

See the most valuable card of every set and how to price your own copy.