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Steam Siege Booster Box

Steam Siege Booster Box.

Booster Box
updated Oct 16, 2026

Add to collection

Market price$1,350£1,019€1,2057 day+3.8%30 day+6.9%Peak, Oct 16, 2026$1,350£1,019€1,205Cheapest shop£250.00
Price history, weekly
$1.4k$357
Feb 8, 2024Oct 16, 2026
Is it worth it

$1,350£1,019€1,205 for the Booster Box, against $480.96£363.08€429.12 to buy all 116 XY - Steam Siege cards as singles. Most of that sits in ten of them, so a box is a bet on those.

The median XY - Steam Siege card has moved -43.4% over three years.

Ten most valuable cards
70% of the set
Top card, Gardevoir EX (Secret)
$108.48£81.89€96.79
Median card
$0.64£0.48€0.57
Cards in the set
116
Released
Aug 3, 2016
In stock
nowhere right now

Where to buy

Shop prices in their own currency, straight from each shop’s own catalogue. Nothing is converted, because a converted price is a guess about a rate rather than what you would be charged.

Region
none in stock · 1 sold out
ShopStockPrice
Romulus GamesPokemon: XY Steam Siege - Booster BoxSold out£250.00

What comes out of it

Grade
Sort
116 of 116 · 116 cards · median $0.64£0.48€0.57
XY - Steam Siege · sorted by value
Gardevoir EX (Secret), XY - Steam SiegeGardevoir EX (Secret)$108£43€73XY - STEAM SIEGE
M Gardevoir EX (Full Art), XY - Steam SiegeM Gardevoir EX (Full Art)$58£22€49XY - STEAM SIEGE
Volcanion EX (Secret), XY - Steam SiegeVolcanion EX (Secret)$36£19€37XY - STEAM SIEGE
M Steelix EX (Full Art), XY - Steam SiegeM Steelix EX (Full Art)$29£14€28XY - STEAM SIEGE
Gardevoir EX (Full Art), XY - Steam SiegeGardevoir EX (Full Art)$27£12€26XY - STEAM SIEGE
M Gardevoir EX, XY - Steam SiegeM Gardevoir EX$24£10€20XY - STEAM SIEGE
Steelix EX (Full Art), XY - Steam SiegeSteelix EX (Full Art)$17£9€18XY - STEAM SIEGE
Professor Sycamore, XY - Steam SiegeProfessor Sycamore$14£8€10XY - STEAM SIEGE
Azumarill, XY - Steam SiegeAzumarill$13£7€0XY - STEAM SIEGE
M Steelix EX, XY - Steam SiegeM Steelix EX$11£6€8XY - STEAM SIEGE
Volcanion EX (Full Art), XY - Steam SiegeVolcanion EX (Full Art)$10£6€10XY - STEAM SIEGE
Magearna EX (Full Art), XY - Steam SiegeMagearna EX (Full Art)$9£7€10XY - STEAM SIEGE
Xerneas BREAK, XY - Steam SiegeXerneas BREAK$8£4€4XY - STEAM SIEGE
Pokemon Ranger (Full Art), XY - Steam SiegePokemon Ranger (Full Art)$7£5€7XY - STEAM SIEGE
Yveltal BREAK, XY - Steam SiegeYveltal BREAK$7£5€6XY - STEAM SIEGE
Hydreigon BREAK, XY - Steam SiegeHydreigon BREAK$6£4€4XY - STEAM SIEGE
Gardevoir EX, XY - Steam SiegeGardevoir EX$6£4€4XY - STEAM SIEGE
Talonflame BREAK, XY - Steam SiegeTalonflame BREAK$5£4€5XY - STEAM SIEGE
Nidoking, XY - Steam SiegeNidoking$4£5€1XY - STEAM SIEGE
Volcarona, XY - Steam SiegeVolcarona$4£3€0XY - STEAM SIEGE
Pyroar BREAK, XY - Steam SiegePyroar BREAK$4£3€1XY - STEAM SIEGE
Clawitzer BREAK, XY - Steam SiegeClawitzer BREAK$3£3€2XY - STEAM SIEGE
Chandelure, XY - Steam SiegeChandelure$3£3€0XY - STEAM SIEGE
Steelix EX, XY - Steam SiegeSteelix EX$3£3€2XY - STEAM SIEGE
Yanmega BREAK, XY - Steam SiegeYanmega BREAK$3£2€4XY - STEAM SIEGE
Volcanion EX, XY - Steam SiegeVolcanion EX$3£3€2XY - STEAM SIEGE
Galvantula, XY - Steam SiegeGalvantula$3£3€0XY - STEAM SIEGE
Special Charge, XY - Steam SiegeSpecial Charge$2£2€0XY - STEAM SIEGE
Ampharos, XY - Steam SiegeAmpharos$2£3€1XY - STEAM SIEGE
Marill, XY - Steam SiegeMarill$2£2€0XY - STEAM SIEGE
Xerneas, XY - Steam SiegeXerneas$2£2€0XY - STEAM SIEGE
Magearna EX, XY - Steam SiegeMagearna EX$2£2€1XY - STEAM SIEGE
Infernape, XY - Steam SiegeInfernape$2£3€0XY - STEAM SIEGE
Bisharp, XY - Steam SiegeBisharp$1£3€1XY - STEAM SIEGE
Shiftry, XY - Steam SiegeShiftry$1£2€0XY - STEAM SIEGE
Samurott, XY - Steam SiegeSamurott$1£2€0XY - STEAM SIEGE
Foongus, XY - Steam SiegeFoongus$1£2€0XY - STEAM SIEGE
Anorith, XY - Steam SiegeAnorith$1£3€0XY - STEAM SIEGE
Gastrodon, XY - Steam SiegeGastrodon$1£2€0XY - STEAM SIEGE
Meowth, XY - Steam SiegeMeowth$1£2€0XY - STEAM SIEGE
Klefki, XY - Steam SiegeKlefki$1£2€0XY - STEAM SIEGE
Gardevoir Spirit Link, XY - Steam SiegeGardevoir Spirit Link$1£3€0XY - STEAM SIEGE
Avalugg, XY - Steam SiegeAvalugg$1£2€0XY - STEAM SIEGE
Cobalion, XY - Steam SiegeCobalion$1£1€0XY - STEAM SIEGE
Mareep, XY - Steam SiegeMareep$1£2€0XY - STEAM SIEGE
Yveltal, XY - Steam SiegeYveltal$1£2€0XY - STEAM SIEGE
Bastiodon, XY - Steam SiegeBastiodon$1£2€0XY - STEAM SIEGE
Rapidash, XY - Steam SiegeRapidash$1£2€0XY - STEAM SIEGE
Oshawott, XY - Steam SiegeOshawott$1£2€0XY - STEAM SIEGE
Hoopa, XY - Steam SiegeHoopa$1£2€0XY - STEAM SIEGE
Armaldo, XY - Steam SiegeArmaldo$1£2€0XY - STEAM SIEGE
Steelix Spirit Link, XY - Steam SiegeSteelix Spirit Link$1£2€0XY - STEAM SIEGE
Druddigon, XY - Steam SiegeDruddigon$1£2€0XY - STEAM SIEGE
Larvesta, XY - Steam SiegeLarvesta$1£1€0XY - STEAM SIEGE
Hawlucha, XY - Steam SiegeHawlucha$1£1€0XY - STEAM SIEGE
Flaaffy, XY - Steam SiegeFlaaffy$1£2€0XY - STEAM SIEGE
Weavile, XY - Steam SiegeWeavile$1£1€0XY - STEAM SIEGE
Talonflame, XY - Steam SiegeTalonflame$1£2€0XY - STEAM SIEGE
Shieldon, XY - Steam SiegeShieldon$1£2€0XY - STEAM SIEGE
Pyroar, XY - Steam SiegePyroar$1£2€0XY - STEAM SIEGE
Primeape, XY - Steam SiegePrimeape$1£2€0XY - STEAM SIEGE
Klinklang, XY - Steam SiegeKlinklang$1£2€0XY - STEAM SIEGE
Persian, XY - Steam SiegePersian$1£3€0XY - STEAM SIEGE
Monferno, XY - Steam SiegeMonferno$1£2€0XY - STEAM SIEGE
Nidorino, XY - Steam SiegeNidorino$1£2€0XY - STEAM SIEGE
Spiritomb, XY - Steam SiegeSpiritomb$1£2€0XY - STEAM SIEGE
Klang, XY - Steam SiegeKlang$1£1€0XY - STEAM SIEGE
Toxicroak, XY - Steam SiegeToxicroak$1£2€0XY - STEAM SIEGE
Ponyta, XY - Steam SiegePonyta$1£2€0XY - STEAM SIEGE
Aipom, XY - Steam SiegeAipom$1£2€0XY - STEAM SIEGE
Jumpluff, XY - Steam SiegeJumpluff$1£2€0XY - STEAM SIEGE
Volcanion, XY - Steam SiegeVolcanion$1£2€0XY - STEAM SIEGE
Yanmega, XY - Steam SiegeYanmega$1£1€0XY - STEAM SIEGE
Tangrowth, XY - Steam SiegeTangrowth$1£2€0XY - STEAM SIEGE
Lampent, XY - Steam SiegeLampent$1£2€0XY - STEAM SIEGE
Dewott, XY - Steam SiegeDewott$1£2€0XY - STEAM SIEGE
Shellos, XY - Steam SiegeShellos$1£1€0XY - STEAM SIEGE
Nidoran M, XY - Steam SiegeNidoran M$0£2€0XY - STEAM SIEGE
Chimchar, XY - Steam SiegeChimchar$0£2€0XY - STEAM SIEGE
Drifloon, XY - Steam SiegeDrifloon$0£1€0XY - STEAM SIEGE
Skiploom, XY - Steam SiegeSkiploom$0£2€0XY - STEAM SIEGE
Hydreigon, XY - Steam SiegeHydreigon$0£2€0XY - STEAM SIEGE
Claw Fossil Anorith, XY - Steam SiegeClaw Fossil Anorith$0£1€0XY - STEAM SIEGE
Mantine, XY - Steam SiegeMantine$0£2€0XY - STEAM SIEGE
Nuzleaf, XY - Steam SiegeNuzleaf$0£1€0XY - STEAM SIEGE
Pokemon Ranger, XY - Steam SiegePokemon Ranger$0£2€0XY - STEAM SIEGE
Bergmite, XY - Steam SiegeBergmite$0£1€0XY - STEAM SIEGE
Ambipom, XY - Steam SiegeAmbipom$0£2€0XY - STEAM SIEGE
Fletchinder, XY - Steam SiegeFletchinder$0£2€0XY - STEAM SIEGE
Clauncher, XY - Steam SiegeClauncher$0£2€0XY - STEAM SIEGE
Amoonguss, XY - Steam SiegeAmoonguss$0£2€0XY - STEAM SIEGE
Litwick, XY - Steam SiegeLitwick$0£2€0XY - STEAM SIEGE
Ninja Boy, XY - Steam SiegeNinja Boy$0£2€0XY - STEAM SIEGE
Tangela, XY - Steam SiegeTangela$0£2€0XY - STEAM SIEGE
Joltik, XY - Steam SiegeJoltik$0£2€0XY - STEAM SIEGE
Zweilous, XY - Steam SiegeZweilous$0£1€0XY - STEAM SIEGE
Probopass, XY - Steam SiegeProbopass$0£2€0XY - STEAM SIEGE
Braviary, XY - Steam SiegeBraviary$0£2€0XY - STEAM SIEGE
Armor Fossil Shieldon, XY - Steam SiegeArmor Fossil Shieldon$0£1€0XY - STEAM SIEGE
Hoppip, XY - Steam SiegeHoppip$0£2€0XY - STEAM SIEGE
Nosepass, XY - Steam SiegeNosepass$0£2€0XY - STEAM SIEGE
Fletchling, XY - Steam SiegeFletchling$0£1€0XY - STEAM SIEGE
Captivating Poke Puff, XY - Steam SiegeCaptivating Poke Puff$0£1€0XY - STEAM SIEGE
Mankey, XY - Steam SiegeMankey$0£2€0XY - STEAM SIEGE
Drifblim, XY - Steam SiegeDrifblim$0£1€0XY - STEAM SIEGE
Pawniard, XY - Steam SiegePawniard$0£1€0XY - STEAM SIEGE
Klink, XY - Steam SiegeKlink$0£1€0XY - STEAM SIEGE
Rufflet, XY - Steam SiegeRufflet$0£1€0XY - STEAM SIEGE
Greedy Dice, XY - Steam SiegeGreedy Dice$0£1€0XY - STEAM SIEGE
Croagunk, XY - Steam SiegeCroagunk$0£1€0XY - STEAM SIEGE
Clawitzer, XY - Steam SiegeClawitzer$0£2€0XY - STEAM SIEGE
Seedot, XY - Steam SiegeSeedot$0£1€0XY - STEAM SIEGE
Litleo, XY - Steam SiegeLitleo$0£1€0XY - STEAM SIEGE
Deino, XY - Steam SiegeDeino$0£2€0XY - STEAM SIEGE
Yanma, XY - Steam SiegeYanma$0£1€0XY - STEAM SIEGE
Sneasel, XY - Steam SiegeSneasel$0£2€0XY - STEAM SIEGE
60 of 116 shown

Other sealed from XY - Steam Siege

ProductKind7 dayPrice
Steam Siege Elite Trainer BoxXY - Steam SiegeETB–$1,800£1,359€1,606Mega Gyarados Collection BoxXY - Steam SiegeCollection Box–$644.46£486.51€575Battle Arena Decks: Keldeo EX vs Rayquaza EXXY - Steam SiegeDeck–$192.61£145.40€171.85Steam Siege Prerelease KitXY - Steam SiegeKit–$160.32£121.03€143.04Steam Siege Single Pack BlisterXY - Steam Siege · 2 versionsBlister–$64.06£48.36€57.16XY Steam Siege Sleeved Booster PackXY - Steam Siege2 in stock–$39.45£29.78€35.20Steam Siege Booster PackXY - Steam Siege1 in stock+3.6%$32.85£24.80€29.31Steam Siege Theme Deck - "Ring of Lightning" [Hoopa]XY - Steam Siege2 in stock–$22.91£17.29€20.44Steam Siege Theme Deck - "Gears of Fire" [Volcanion]XY - Steam Siege2 in stock-0.4%$20.06£15.14€17.90

What this price is

$1,350£1,019€1,205 is the TCGplayer market price, the number copies are actually changing hands at rather than what any one shop is asking. It is the same source as the card prices everywhere else on the site, so a box and the cards inside it are measured the same way and can be compared directly.