| CloysterXY · 32/146 | XY | 32/146 | Rare | $0.48 |
| CloysterExpedition Base Set · 42/165 | Expedition Base Set | 42/165 | Rare | €6.41 |
| CloysterFireRed & LeafGreen · 20/112 | FireRed & LeafGreen | 20/112 | Rare | $2.90 |
| Cloyster δDragon Frontiers · 14/101 | Dragon Frontiers | 14/101 | Rare | $1.43 |
| CoalossalAscended Heroes · 120/217 | Ascended Heroes | 120/217 | Rare | €0.06 |
| CobalionSilver Tempest · 126/195 | Silver Tempest | 126/195 | Rare | €0.10 |
| CobalionBlack Bolt · 066/086 | Black Bolt | 066/086 | Rare | €0.07 |
| CobalionSteam Siege · 74/114 | Steam Siege | 74/114 | Rare | $0.36 |
| CofagrigusWhite Flare · 040/086 | White Flare | 040/086 | Rare | €0.08 |
| CofagrigusSurging Sparks · 083/191 | Surging Sparks | 083/191 | Rare | €0.05 |
| CofagrigusNoble Victories · 46/101 | Noble Victories | 46/101 | Rare | €0.94 |
| CofagrigusNoble Victories · 47/101 | Noble Victories | 47/101 | Rare | €0.94 |
| CofagrigusDark Explorers · 52/108 | Dark Explorers | 52/108 | Rare | €0.68 |
| CofagrigusPlasma Freeze · 57/116 | Plasma Freeze | 57/116 | Rare | $1.70 |
| CofagrigusLost Thunder · 100/214 | Lost Thunder | 100/214 | Rare | €1.07 |
| CombuskenCrystal Guardians · 16/100 | Crystal Guardians | 16/100 | Rare | €1.01 |
| ComfeyLost Origin · 079/196 | Lost Origin | 079/196 | Rare | €0.14 |
| Computer SearchBase · 71/102 | Base | 71/102 | Rare | $3.18 |
| Computer SearchBase Set 2 · 101/130 | Base Set 2 | 101/130 | Rare | $2.72 |
| ConkeldurrBattle Styles · 075/163 | Battle Styles | 075/163 | Rare | €0.09 |
| ConkeldurrBlack Bolt · 049/086 | Black Bolt | 049/086 | Rare | €0.07 |
| ConkeldurrNoble Victories · 65/101 | Noble Victories | 65/101 | Rare | $0.95 |
| ConkeldurrPlasma Storm · 81/135 | Plasma Storm | 81/135 | Rare | €0.68 |
| ConkeldurrXY · 67/146 | XY | 67/146 | Rare | €0.67 |
| CopperajahShrouded Fable · 042/064 | Shrouded Fable | 042/064 | Rare | €0.06 |
| CorviknightSword & Shield · 135/202 | Sword & Shield | 135/202 | Rare | €0.20 |
| CorviknightFusion Strike · 190/264 | Fusion Strike | 190/264 | Rare | €0.17 |
| CosmoemCelebrations · 14 | Celebrations | 14 | Rare | €0.17 |
| CosmoemSun & Moon · 65/149 | Sun & Moon | 65/149 | Rare | €0.20 |
| CosmogCelebrations · 13 | Celebrations | 13 | Rare | €0.17 |
| CrabominableSun & Moon · 43/149 | Sun & Moon | 43/149 | Rare | €0.11 |
| CrabominableUnbroken Bonds · 105/214 | Unbroken Bonds | 105/214 | Rare | €0.48 |
| CrabominableCosmic Eclipse · 122/236 | Cosmic Eclipse | 122/236 | Rare | $0.25 |
| CrabominableBurning Shadows · 74/147 | Burning Shadows | 74/147 | Rare | €0.16 |
| CradilyStellar Crown · 006/142 | Stellar Crown | 006/142 | Rare | €0.10 |
| CradilyPlasma Blast · 4/101 | Plasma Blast | 4/101 | Rare | €1.24 |
| CradilyCosmic Eclipse · 11/236 | Cosmic Eclipse | 11/236 | Rare | €0.61 |
| CradilyLegends Awakened · 21/146 | Legends Awakened | 21/146 | Rare | €1.83 |
| CramorantSword & Shield · 062/202 | Sword & Shield | 062/202 | Rare | $0.08 |
| CramorantLost Origin · 050/196 | Lost Origin | 050/196 | Rare | €0.10 |
| CramorantRebel Clash · 051/192 | Rebel Clash | 051/192 | Rare | €0.17 |
| CrawdauntCrimson Invasion · 25/111 | Crimson Invasion | 25/111 | Rare | €0.31 |
| CrawdauntLegends Awakened · 22/146 | Legends Awakened | 22/146 | Rare | €0.96 |
| CrawdauntDragon · 13/97 | Dragon | 13/97 | Rare | $1.09 |
| Crawdaunt GSupreme Victors · 23/147 | Supreme Victors | 23/147 | Rare | €1.66 |
| CresseliaShrouded Fable · 021/064 | Shrouded Fable | 021/064 | Rare | €0.06 |
| CresseliaBREAKthrough · 70/162 | BREAKthrough | 70/162 | Rare | $0.32 |
| CrobatHS—Unleashed · 14/95 | HS—Unleashed | 14/95 | Rare | €1.38 |
| CrobatPhantom Forces · 33/119 | Phantom Forces | 33/119 | Rare | $0.58 |
| CrobatMysterious Treasures · 23/123 | Mysterious Treasures | 23/123 | Rare | €2.03 |