| Kartana-GXCrimson Invasion · 106/111 | Crimson Invasion | 106/111 | Rare Ultra | €5.42 |
| Keldeo-EXBoundaries Crossed · 142/149 | Boundaries Crossed | 142/149 | Rare Ultra | €43.33 |
| Keldeo-GXUnified Minds · 219/236 | Unified Minds | 219/236 | Rare Ultra | €5.41 |
| KiaweBurning Shadows · 144/147 | Burning Shadows | 144/147 | Rare Ultra | €5.99 |
| KindlerBrilliant Stars · 170/172 | Brilliant Stars | 170/172 | Rare Ultra | $0.89 |
| Kingdra-EXFates Collide · 122/124 | Fates Collide | 122/124 | Rare Ultra | $19.60 |
| Kingdra-GXDragon Majesty · 66/70 | Dragon Majesty | 66/70 | Rare Ultra | €10.23 |
| KlaraChilling Reign · 194/198 | Chilling Reign | 194/198 | Rare Ultra | $14.45 |
| Koga's TrapUnbroken Bonds · 211/214 | Unbroken Bonds | 211/214 | Rare Ultra | €34.40 |
| Kommo-o-GXGuardians Rising · 141/145 | Guardians Rising | 141/145 | Rare Ultra | €4.42 |
| KorrinaFurious Fists · 111/111 | Furious Fists | 111/111 | Rare Ultra | €4.45 |
| Korrina's FocusBattle Styles · 160/163 | Battle Styles | 160/163 | Rare Ultra | $4.26 |
| Kricketune VBattle Styles · 142/163 | Battle Styles | 142/163 | Rare Ultra | €3.19 |
| Kyogre-EXDark Explorers · 104/108 | Dark Explorers | 104/108 | Rare Ultra | $318.96 |
| Kyogre-EXPrimal Clash · 148/160 | Primal Clash | 148/160 | Rare Ultra | €2.48 |
| Kyurem-EXNext Destinies · 96/99 | Next Destinies | 96/99 | Rare Ultra | €79.50 |
| Kyurem-EXAncient Origins · 86/98 | Ancient Origins | 86/98 | Rare Ultra | €30.43 |
| Kyurem VLost Origin · 174/196 | Lost Origin | 174/196 | Rare Ultra | €3.00 |
| LadyLost Origin · 193/196 | Lost Origin | 193/196 | Rare Ultra | €3.74 |
| LadyHidden Fates Shiny Vault · SV86/SV94 | Hidden Fates Shiny Vault | SV86/SV94 | Rare Ultra | €13.90 |
| LanaUltra Prism · 150/156 | Ultra Prism | 150/156 | Rare Ultra | €27.55 |
| LanceSilver Tempest · 192/195 | Silver Tempest | 192/195 | Rare Ultra | $3.64 |
| Landorus-EXBoundaries Crossed · 144/149 | Boundaries Crossed | 144/149 | Rare Ultra | €33.89 |
| Lapras-GXSun & Moon · 139/149 | Sun & Moon | 139/149 | Rare Ultra | €9.84 |
| Lapras VSword & Shield · 189/202 | Sword & Shield | 189/202 | Rare Ultra | $7.01 |
| Latias-EXPlasma Freeze · 112/116 | Plasma Freeze | 112/116 | Rare Ultra | $243.05 |
| Latias & Latios-GXTeam Up · 169/181 | Team Up | 169/181 | Rare Ultra | $121.53 |
| Latias & Latios-GXTeam Up · 170/181 | Team Up | 170/181 | Rare Ultra | €4,208.33 |
| Latios-EXPlasma Freeze · 113/116 | Plasma Freeze | 113/116 | Rare Ultra | $252.48 |
| Latios-EXRoaring Skies · 101/108 | Roaring Skies | 101/108 | Rare Ultra | €38.25 |
| Latios-GXUnified Minds · 223/236 | Unified Minds | 223/236 | Rare Ultra | €14.04 |
| Leafeon-GXUltra Prism · 139/156 | Ultra Prism | 139/156 | Rare Ultra | $45.91 |
| Leafeon VEvolving Skies · 166/203 | Evolving Skies | 166/203 | Rare Ultra | €21.18 |
| Leafeon VEvolving Skies · 167/203 | Evolving Skies | 167/203 | Rare Ultra | €136.62 |
| LeonVivid Voltage · 182/185 | Vivid Voltage | 182/185 | Rare Ultra | $7.66 |
| Liepard VChilling Reign · 180/198 | Chilling Reign | 180/198 | Rare Ultra | $2.58 |
| Lightning EnergyCrown Zenith · 155/159 | Crown Zenith | 155/159 | Rare Ultra | $1.96 |
| LillieSun & Moon · 147/149 | Sun & Moon | 147/149 | Rare Ultra | €37.39 |
| LillieUltra Prism · 151/156 | Ultra Prism | 151/156 | Rare Ultra | €115.37 |
| Lillie's Full ForceCosmic Eclipse · 230/236 | Cosmic Eclipse | 230/236 | Rare Ultra | €49.95 |
| LisiaCelestial Storm · 164/168 | Celestial Storm | 164/168 | Rare Ultra | €66.66 |
| LookerUltra Prism · 152/156 | Ultra Prism | 152/156 | Rare Ultra | €8.60 |
| Lucario-EXFurious Fists · 107/111 | Furious Fists | 107/111 | Rare Ultra | €87.08 |
| Lucario-GXForbidden Light · 122/131 | Forbidden Light | 122/131 | Rare Ultra | $35.45 |
| Lucario & Melmetal-GXUnbroken Bonds · 203/214 | Unbroken Bonds | 203/214 | Rare Ultra | €36.11 |
| Lugia-EXPlasma Storm · 134/135 | Plasma Storm | 134/135 | Rare Ultra | €845.00 |
| Lugia-EXAncient Origins · 94/98 | Ancient Origins | 94/98 | Rare Ultra | $217.97 |
| Lugia-GXLost Thunder · 207/214 | Lost Thunder | 207/214 | Rare Ultra | $125.64 |
| Lugia VSilver Tempest · 185/195 | Silver Tempest | 185/195 | Rare Ultra | €14.58 |
| Lugia VSilver Tempest · 186/195 | Silver Tempest | 186/195 | Rare Ultra | €440.98 |