XY - Steam Siege · STS

The most valuable XY - Steam Siege card is Gardevoir EX (Secret) #116/114 at $107.87; completing the set costs $432 in singles. Updated 2026-10-02

cost to complete, price since release: more ↓

Completing XY - Steam Siege costs $432 in singles today (one of each of its 116 card numbers at the cheapest printing, TCGplayer market, 2026-10-02). Without the Gardevoir EX (Secret) #116/114 ($108) it is $325. A master set, all 209 printings we price (reverse holos, parallels and other variants included), costs $513. Most valuable cards in XY - Steam Siege: Gardevoir EX (Secret) #116/114 ($107.87), M Gardevoir EX (Full Art) #112/114 ($56.89), Volcanion EX (Secret) #115/114 ($36.90).

160 productscost to complete (singles) $432master set $513released 2016-08-03 · all 2016 sets →

MOST VALUABLE

1Gardevoir EX (Secret) #116/114 · Secret Rare$107.87
2M Gardevoir EX (Full Art) #112/114 · Ultra Rare$56.89
3Volcanion EX (Secret) #115/114 · Secret Rare$36.90
4M Steelix EX (Full Art) #109/114 · Ultra Rare$30.31
5Gardevoir EX (Full Art) #111/114 · Ultra Rare$25.28
6M Gardevoir EX #79/114 · Ultra Rare$23.92
7Steelix EX (Full Art) #108/114 · Ultra Rare$18.12
8Professor Sycamore #114/114 · Ultra Rare$13.86
9Azumarill #77/114 · Uncommon$12.88
10M Steelix EX #68/114 · Ultra Rare$10.88

MOVERS · 30 DAYS

GAINERS

Professor Sycamore #114/114$11.84 →$13.86+17%
Chandelure #50/114$2.45 →$2.79+14%
Volcanion EX (Full Art) #107/114$9.66 →$10.60+10%
M Steelix EX #68/114$10.04 →$10.88+8%
M Gardevoir EX #79/114$22.10 →$23.92+8%

LOSERS

Pyroar BREAK #24/114$4.05 →$3.56-12%
Volcanion EX #26/114$2.86 →$2.56-10%
Galvantula #42/114$2.79 →$2.51-10%
Yveltal BREAK #66/114$8.35 →$7.57-9%
Clawitzer BREAK #35/114$3.64 →$3.40-7%

Market price today vs 2026-09-02; singles only, either end $2 or more.

BOX OR SINGLES?

BOOSTER BOX

$1,300

PER PACK (36)

$36.11

TOP 5 AS SINGLES

$257

CARDS WORTH MORE THAN A PACK

The set's 5 most valuable cards cost less as singles than the box does. A box only wins if the pulls land; pull rates vary by set and aren't official, so we show today's prices, not a guess.

SEALED PRODUCT · TCGPLAYER MARKET

Steam Siege Elite Trainer Box$1800.00
Steam Siege Booster Box$1299.99
Mega Gyarados Collection Box$644.46
Battle Arena Decks: Keldeo EX vs Rayquaza EX$175.77
Steam Siege Prerelease Kit$160.32
Steam Siege Sleeved Booster Pack Art Bundle [Set of 4]$139.49
Steam Siege Single Pack Blister [Lucario]$63.73
XY Steam Siege Sleeved Booster Pack$39.13
Steam Siege Single Pack Blister [Floette]$37.29
Steam Siege Booster Pack$31.71
Steam Siege Theme Deck - "Ring of Lightning" [Hoopa]$22.91
Steam Siege Theme Deck - "Gears of Fire" [Volcanion]$20.15

All 12 sealed XY - Steam Siege products together (cases included): $4,435 at TCGplayer market. Not part of the cost to complete.

XY - STEAM SIEGE · ALL CARDS BY VALUE

Steam Siege Elite Trainer Box

$1800.00

Steam Siege Booster Box

$1299.99

Mega Gyarados Collection Box

$644.46

Battle Arena Decks: Keldeo EX vs Rayquaza EX

$175.77

Steam Siege Prerelease Kit

$160.32

Steam Siege Sleeved Booster Pack Art Bundle [Set of 4]

$139.49

#116/114 Gardevoir EX (Secret)

Secret Rare

$107.87

Steam Siege Single Pack Blister [Lucario]

$63.73

#112/114 M Gardevoir EX (Full Art)

Ultra Rare

$56.89

XY Steam Siege Sleeved Booster Pack

$39.13

Steam Siege Single Pack Blister [Floette]

$37.29

#115/114 Volcanion EX (Secret)

Secret Rare

$36.90

Steam Siege Booster Pack

$31.71

#109/114 M Steelix EX (Full Art)

Ultra Rare

$30.31

#111/114 Gardevoir EX (Full Art)

Ultra Rare

$25.28

#79/114 M Gardevoir EX

Ultra Rare

$23.92

Steam Siege Theme Deck - "Ring of Lightning" [Hoopa]

$22.91

Steam Siege Theme Deck - "Gears of Fire" [Volcanion]

$20.15

#108/114 Steelix EX (Full Art)

Ultra Rare

$18.12

#114/114 Professor Sycamore

#107/114 Volcanion EX (Full Art)

Ultra Rare

$10.60

#110/114 Magearna EX (Full Art)

Ultra Rare

$9.23

#66/114 Yveltal BREAK

Rare BREAK

$7.57

#82/114 Xerneas BREAK

Rare BREAK

$7.39

#113/114 Pokemon Ranger (Full Art)

Ultra Rare

$7.35

#87/114 Hydreigon BREAK

#21/114 Talonflame BREAK

#35/114 Clawitzer BREAK

#105/114 Special Charge

Code Card - Legendary Battle Decks [Moltres]

#101/114 Gardevoir Spirit Link

SET FAQ

How much does it cost to complete XY - Steam Siege?

Completing XY - Steam Siege costs $432 in singles today (one of each of its 116 card numbers at the cheapest printing, TCGplayer market, 2026-10-02). Without the Gardevoir EX (Secret) #116/114 ($108) it is $325. A master set, all 209 printings we price (reverse holos, parallels and other variants included), costs $513. Sealed product is not included. Prices are daily TCGplayer market prices for the cheapest printing of each card.

How much does a XY - Steam Siege master set cost?

A XY - Steam Siege master set, all 209 printings we price (reverse holos, parallels and other variants included), costs $513. The base set, one of each card number, costs $432 (TCGplayer market, 2026-10-02).

Is a XY - Steam Siege booster box worth it?

A XY - Steam Siege Booster Box is $1,300 at TCGplayer's market price (36 packs, about $36.11 a pack). Buying the set's 5 most valuable cards as singles costs $257; the most valuable, Gardevoir EX (Secret), is $108. 3 cards in the set sell for more than a pack costs. Whether a box beats singles depends on pull rates, which vary by set; these are today's market prices.

What are the most valuable cards in XY - Steam Siege?

As of 2026-10-03, the most valuable Pokemon TCG cards in XY - Steam Siege by TCGplayer market price are 1. Gardevoir EX (Secret) #116/114 at $108, 2. M Gardevoir EX (Full Art) #112/114 at $57, 3. Volcanion EX (Secret) #115/114 at $37, 4. M Steelix EX (Full Art) #109/114 at $30, 5. Gardevoir EX (Full Art) #111/114 at $25. Prices are daily TCGplayer market figures per printing; the ranked list on this page updates every day.

How many cards are in XY - Steam Siege?

XY - Steam Siege has 116 single cards in TickerMint's catalog plus 44 sealed and other products. The full card list below is sorted by market price (collector-number order is one tap away), with today's price on every card.

Which XY - Steam Siege cards are going up in price?

The biggest 30-day gainers in XY - Steam Siege by TCGplayer market price since 2026-09-02: Professor Sycamore #114/114 (+17%, $11.84 to $13.86), Chandelure #50/114 (+14%, $2.45 to $2.79), Volcanion EX (Full Art) #107/114 (+10%, $9.66 to $10.60), M Steelix EX #68/114 (+8%, $10.04 to $10.88), M Gardevoir EX #79/114 (+8%, $22.10 to $23.92). Falling: Pyroar BREAK #24/114 (-12%, $4.05 to $3.56), Volcanion EX #26/114 (-10%, $2.86 to $2.56), Galvantula #42/114 (-10%, $2.79 to $2.51). Cards under $2 at both ends are left out; every card page charts the full history.

How much is XY - Steam Siege sealed product worth?

As of 2026-10-03, TCGplayer market prices for XY - Steam Siege sealed product are Steam Siege Booster Box $1,300, Steam Siege Elite Trainer Box $1,800, XY Steam Siege Sleeved Booster Pack $39. TickerMint tracks 12 sealed XY - Steam Siege products daily; each one has its own price history page.

When was XY - Steam Siege released?

XY - Steam Siege was released on 2016-08-03 (set code STS). TickerMint has tracked its prices daily since February 2024 or since release, whichever is later.

Price data for your app or store: API and daily history since 2024 · CSV download