XY - Steam Siege

As of Sep 21, 2026 Released Aug 3, 2016

Singles + sealed Singles Sealed

XY - Steam Siege

Steam Siege Booster Box

Market reference $1,299.99 as of Sep 21, 2026

Shop the booster box on TCGplayer

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Cheaper way in: Hoopa EX Challenge Box for $69.00

Top 5 cards worth $259.55 combined vs. $1,299.99 for the booster box — a rough signal, not pull-rate odds.

Top cards in this set

Sealed product buying guide

Filter by type: click a type below, or a second time to clear it.

Product	Market reference	Shop
Steam Siege Booster Box	$1,299.99 as of Sep 21, 2026	Shop booster box ↗
Steam Siege Sleeved Booster Case	No market price	Shop case ↗
Steam Siege Elite Trainer Box Case	No market price	Shop case ↗
Steam Siege Sleeved Booster Pack Art Bundle [Set of 4]	$137.99 as of Sep 21, 2026	Shop bundle ↗
Hoopa EX Challenge Box	$69.00 as of Sep 18, 2026	Shop box ↗
Mega Gyarados Collection Box	$644.46 as of Sep 21, 2026	Shop box ↗
Steam Siege Elite Trainer Box	$1,800.00 as of Sep 21, 2026	Shop box ↗
Code Card - Steam Siege Elite Trainer Box	No market price	Shop box ↗
Battle Arena Decks: Keldeo EX vs Rayquaza EX	$167.93 as of Sep 18, 2026	Shop Sealed product ↗
Battle Heart Tin [Magearna EX]	No market price	Shop Sealed product ↗

Market references are recorded TCGplayer prices. Contents and pack counts vary by product. Check the listing for current price, contents, condition and shipping.

Buy links are TCGplayer affiliate links. Hoard earns a small commission, at no cost to you.

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Singles, sealed & slabs

Singles and sealed have separate price indexes. “All” combines those two catalogs. Graded-card prices are not included in these TCGplayer indexes.

Singles

Individual ungraded cards and their tracked variants.

+0.95% over 30 days

Index as of Sep 21, 2026

Sealed

Boxes, packs and other sealed formats. Check the exact product before comparing prices.

+6.06% over 30 days

Index as of Sep 21, 2026

Slabs

Compare the same card, edition, grading company and grade. PSA 9, PSA 10 and BGS 10 are separate markets.

Set-level slab index unavailable.

How graded pricing works

Catalog price trends

The combined singles and sealed index is context for this set. Compare the exact product, edition, language and sealed condition before using a price as a resale reference.

XY - Steam Siege (Pokemon) — median price $0.44, tracked by Hoard as of Sep 21, 2026.

See the full Pokemon market report.

Index · last 90 days

286.4 +1.66% 7d

Market value

$4,768

of one of every product

$4,966 on TCGplayer low

30d change

+5.52%

90d change

+6.34%

Product median

$0.44

Price observations

222

includes tracked variants

Starts at 100. Higher means prices are rising, lower means they're falling — each link compares products priced on both observation dates. This is a catalog index, not a box price or resale return.

Compare against another set

Trending in this set

Week-over-week change per card -- coarser than the set-level index above (weekly, not daily), and only for cards with enough recent sales to compare.

Cards in this set

Top 60 by price of 160

Card	#	Rarity	Market Price	Buy
Steam Siege Elite Trainer Box	—	—	$1,800.00	Buy ↗
Steam Siege Booster Box	—	—	$1,262.50	Buy ↗
Mega Gyarados Collection Box	—	—	$644.46	Buy ↗
Steam Siege 3 Pack Blister [Rayquaza]	—	—	$300.00	Buy ↗
Battle Arena Decks: Keldeo EX vs Rayquaza EX	—	—	$167.93	Buy ↗
Steam Siege Prerelease Kit	—	—	$160.32	Buy ↗
Steam Siege Sleeved Booster Pack Art Bundle [Set of 4]	—	—	$137.99	Buy ↗
Gardevoir EX (Secret)	116/114	Secret rare	$107.47	Buy ↗
Legendary Battle Decks [Moltres]	—	—	$94.95	Buy ↗
Legendary Battle Decks [Zapdos]	—	—	$71.99	Buy ↗
Hoopa EX Challenge Box	—	—	$69.00	Buy ↗
Steam Siege Single Pack Blister [Lucario]	—	—	$63.73	Buy ↗
M Gardevoir EX (Full Art)	112/114	Ultra rare	$58.33	Buy ↗
XY Steam Siege Sleeved Booster Pack	—	—	$39.03	Buy ↗
Volcanion EX (Secret)	115/114	Secret rare	$37.71	Buy ↗
Steam Siege Single Pack Blister [Floette]	—	—	$36.99	Buy ↗
Steam Siege Booster Pack	—	—	$31.17	Buy ↗
M Steelix EX (Full Art)	109/114	Ultra rare	$30.17	Buy ↗
Gardevoir EX (Full Art)	111/114	Ultra rare	$25.87	Buy ↗
M Gardevoir EX	79/114	Ultra rare	$22.97	Buy ↗
Steam Siege Theme Deck - "Ring of Lightning" [Hoopa]	—	—	$22.91	Buy ↗
Steam Siege Theme Deck - "Gears of Fire" [Volcanion]	—	—	$19.46	Buy ↗
Steelix EX (Full Art)	108/114	Ultra rare	$18.46	Buy ↗
Professor Sycamore	114/114	Ultra rare	$12.85	Buy ↗
M Steelix EX	68/114	Ultra rare	$10.89	Buy ↗
Volcanion EX (Full Art)	107/114	Ultra rare	$10.21	Buy ↗
Magearna EX (Full Art)	110/114	Ultra rare	$9.22	Buy ↗
Yveltal BREAK	66/114	Rare break	$8.39	Buy ↗
Pokemon Ranger (Full Art)	113/114	Ultra rare	$7.59	Buy ↗
Xerneas BREAK	82/114	Rare break	$7.42	Buy ↗
Hydreigon BREAK	87/114	Rare break	$5.79	Buy ↗
Gardevoir EX	78/114	Ultra rare	$5.01	Buy ↗
Talonflame BREAK	21/114	Rare break	$4.62	Buy ↗
Pyroar BREAK	24/114	Rare break	$4.21	Buy ↗
Clawitzer BREAK	35/114	Rare break	$3.50	Buy ↗
Chandelure	50/114	Holo rare	$2.87	Buy ↗
Steelix EX	67/114	Ultra rare	$2.86	Buy ↗
Volcanion EX	26/114	Ultra rare	$2.83	Buy ↗
Yanmega BREAK	8/114	Rare break	$2.82	Buy ↗
Ampharos	40/114	Holo rare	$1.82	Buy ↗
Xerneas	81/114	Holo rare	$1.73	Buy ↗
Azumarill	77/114	Uncommon	$1.71	Buy ↗
Infernape	20/114	Holo rare	$1.61	Buy ↗
Bisharp	64/114	Holo rare	$1.42	Buy ↗
Magearna EX	75/114	Ultra rare	$1.40	Buy ↗
Shiftry	11/114	Holo rare	$1.28	Buy ↗
Code Card - Legendary Battle Decks [Moltres]	—	Code card	$0.90	Buy ↗
Nidoking	45/114	Rare	$0.84	Buy ↗
Volcarona	15/114	Rare	$0.75	Buy ↗
Yveltal	65/114	Holo rare	$0.75	Buy ↗
Klinklang	73/114	Holo rare	$0.64	Buy ↗
Talonflame	96/114	Rare	$0.64	Buy ↗
Bastiodon	70/114	Rare	$0.62	Buy ↗
Hydreigon	86/114	Holo rare	$0.62	Buy ↗
Gastrodon	29/114	Rare	$0.60	Buy ↗
Galvantula	42/114	Rare	$0.51	Buy ↗
Shellos	28/114	Common	$0.49	Buy ↗
Hoopa	51/114	Rare	$0.46	Buy ↗
Avalugg	37/114	Rare	$0.45	Buy ↗
Samurott	32/114	Rare	$0.44	Buy ↗

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Priced and tracked with Hoard. Docs · Connect via MCP

These prices come from the same TCGplayer feed Hoard uses to reprice seller inventory. If you run a store, read how TCGplayer repricing works, see what Hoard pricing costs, compare the main TCGplayer alternatives, or read Hoard against BinderPOS and how to migrate from BinderPOS.