Pokémon TCG · Steam Siege · Sealed
Mega Gyarados Collection Box price
Mega Gyarados Collection Box is a sealed Pokémon TCG product from the set Steam Siege, released August 3, 2016. It has a market price of about $644.46 on TCGplayer and €679.86 on Cardmarket (updated October 29, 2026). Over the last 7 days, its TCGplayer market price rose 0.0% and the Cardmarket price trend rose 0.0%. Over the last 30 days, its TCGplayer market price rose 0.0% and the Cardmarket price trend rose 12.0%. Over the last 90 days, its TCGplayer market price rose 23.2% and the Cardmarket price trend fell 9.2%. Its 90-day TCGplayer market price range is $523.00 to $644.46. Its 90-day Cardmarket price trend range is €606.80 to €750.00. The 10 most valuable Steam Siege cards add up to $335.40 on TCGplayer (0.5 times the price of this product) and €478.24 on Cardmarket (0.7 times the price).
Mega Gyarados Collection Box in numbers
| Figure | Value | Source |
|---|---|---|
| TCGplayer price | $644.46 | TCGplayer market price, observed September 14, 2026 |
| Cardmarket price | €679.86 | Cardmarket price trend, observed October 29, 2026 |
| 10 most valuable cards, TCGplayer | $335.40 (0.5 times the price) | Sum of the TCGplayer market prices of the 10 most valuable Steam Siege cards on TCGplayer, against this product's TCGplayer market price, computed by Sparkl; lowest listings left out |
| 10 most valuable cards, Cardmarket | €478.24 (0.7 times the price) | Sum of the Cardmarket price trends of the 10 most valuable Steam Siege cards on Cardmarket, against this product's Cardmarket price trend, computed by Sparkl; lowest listings left out |
| Released | August 3, 2016 | Sparkl catalog |
| Set | Steam Siege | Sparkl catalog |
Mega Gyarados Collection Box price changes
| Price | 7 days | 30 days | 90 days | 90-day range |
|---|---|---|---|---|
| TCGplayer market price | +0.0% | +0.0% | +23.2% | $523.00 – $644.46 |
| Cardmarket price trend | +0.0% | +12.0% | −9.2% | €606.80 – €750.00 |
Change of the same price (same market) against 7, 30 and 90 days ago; range: its lowest and highest daily value over the last 90 days. Only where the price history supports a figure; lowest listings have none.
Most valuable Steam Siege cards
-
Gardevoir-EX#116 · Rare Secret $110.82 · €146.35
-
M Gardevoir-EX#112 · Rare Ultra $57.28 · €115.60
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Volcanion-EX#115 · Rare Secret $35.95 · €53.19
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Gardevoir-EX#111 · Rare Ultra $28.19 · €35.27
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M Steelix-EX#109 · Rare Ultra $28.02 · €24.13
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M Gardevoir-EX#79 · Rare Holo EX $23.95 · €38.32
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Steelix-EX#108 · Rare Ultra $18.19 · €26.67
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Professor Sycamore#114 · Rare Ultra $12.71 · €10.44
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M Steelix-EX#68 · Rare Holo EX $10.47 · €12.01
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Volcanion-EX#107 · Rare Ultra $9.82 · €16.01
Ranked by TCGplayer market price, the prices their sum above adds up, updated October 29, 2026. Most valuable Steam Siege cards · All 116 cards in Steam Siege
More Steam Siege sealed products
- Steam Siege Elite Trainer Box$1,800.00 TCGplayer · €1,698.08 Cardmarket
- Steam Siege Booster Box$1,436.99 TCGplayer · €1,617.60 Cardmarket
All 26 Steam Siege sealed products · Steam Siege card list and prices
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Track Mega Gyarados Collection Box in Sparkl.gg
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How this page is made: TCGplayer and Cardmarket prices, refreshed daily; changes, per-pack prices and sums are computed by Sparkl from those prices.