| Moomoo MilkLost Thunder · 185/214 | Lost Thunder | 185/214 | Uncommon | €0.13 |
| Moonlight StadiumGreat Encounters · 100/106 | Great Encounters | 100/106 | Uncommon | €0.46 |
| Moonlit HillPaldean Fates · 081/091 | Paldean Fates | 081/091 | Uncommon | €0.02 |
| Moon & Sun BadgeEvolving Skies · 151/203 | Evolving Skies | 151/203 | Uncommon | €0.03 |
| MorganTeam Up · 149/181 | Team Up | 149/181 | Uncommon | €0.12 |
| MorgremRebel Clash · 124/192 | Rebel Clash | 124/192 | Uncommon | €0.06 |
| MorgremFusion Strike · 177/264 | Fusion Strike | 177/264 | Uncommon | €0.05 |
| MorgremBrilliant Stars · 093/172 | Brilliant Stars | 093/172 | Uncommon | €0.04 |
| MorpekoTwilight Masquerade · 072/167 | Twilight Masquerade | 072/167 | Uncommon | €0.06 |
| MorpekoSilver Tempest · 116/195 | Silver Tempest | 116/195 | Uncommon | €0.06 |
| MorpekoRebel Clash · 073/192 | Rebel Clash | 073/192 | Uncommon | €0.13 |
| MorpekoBattle Styles · 098/163 | Battle Styles | 098/163 | Uncommon | €0.08 |
| MortyLost Thunder · 186/214 | Lost Thunder | 186/214 | Uncommon | €0.18 |
| Morty's ConvictionTemporal Forces · 155/162 | Temporal Forces | 155/162 | Uncommon | €0.10 |
| MothimMajestic Dawn · 42/100 | Majestic Dawn | 42/100 | Uncommon | €0.23 |
| Mountain RingFurious Fists · 97/111 | Furious Fists | 97/111 | Uncommon | €0.20 |
| Mount LanakilaBurning Shadows · 118/147 | Burning Shadows | 118/147 | Uncommon | €0.08 |
| Mr. Briney's CompassionDragon · 87/97 | Dragon | 87/97 | Uncommon | €4.60 |
| Mr. Briney's CompassionPOP Series 2 · 8/17 | POP Series 2 | 8/17 | Uncommon | €9.00 |
| Mr. FujiFossil · 58/62 | Fossil | 58/62 | Uncommon | €2.00 |
| Mr. MimeGenerations · 52/83 | Generations | 52/83 | Uncommon | €0.31 |
| Mr. MimeXY · 91/146 | XY | 91/146 | Uncommon | €0.23 |
| Mr. MimePrimal Clash · 101/160 | Primal Clash | 101/160 | Uncommon | €0.43 |
| Mr. Stone's ProjectHolon Phantoms · 88/110 | Holon Phantoms | 88/110 | Uncommon | €0.49 |
| Mr. Stone's ProjectDragon Frontiers · 77/101 | Dragon Frontiers | 77/101 | Uncommon | €0.50 |
| Mr. Stone's ProjectEmerald · 79/106 | Emerald | 79/106 | Uncommon | €1.62 |
| Mt. CoronetUltra Prism · 130/156 | Ultra Prism | 130/156 | Uncommon | €0.33 |
| Mt. MoonFireRed & LeafGreen · 94/112 | FireRed & LeafGreen | 94/112 | Uncommon | €0.67 |
| MudsdaleDestined Rivals · 108/182 | Destined Rivals | 108/182 | Uncommon | €0.03 |
| MudsdaleTemporal Forces · 092/162 | Temporal Forces | 092/162 | Uncommon | €0.03 |
| MukScarlet & Violet · 127/198 | Scarlet & Violet | 127/198 | Uncommon | €0.04 |
| Muk151 · 089/165 | 151 | 089/165 | Uncommon | €0.07 |
| MukHS—Undaunted · 31/90 | HS—Undaunted | 31/90 | Uncommon | €0.38 |
| MukPlatinum · 57/127 | Platinum | 57/127 | Uncommon | €0.15 |
| MukSecret Wonders · 56/132 | Secret Wonders | 56/132 | Uncommon | €0.19 |
| Multi SwitchGuardians Rising · 129/145 | Guardians Rising | 129/145 | Uncommon | €0.08 |
| Multi Technical Machine 01Expedition Base Set · 144/165 | Expedition Base Set | 144/165 | Uncommon | €1.06 |
| Multi Technical Machine 01POP Series 2 · 9/17 | POP Series 2 | 9/17 | Uncommon | €2.33 |
| MunchlaxUnified Minds · 173/236 | Unified Minds | 173/236 | Uncommon | €3.82 |
| MunnaBlack & White · 48/114 | Black & White | 48/114 | Uncommon | €0.22 |
| MunnaBoundaries Crossed · 68/149 | Boundaries Crossed | 68/149 | Uncommon | €0.52 |
| MurkrowSupreme Victors · 72/147 | Supreme Victors | 72/147 | Uncommon | €0.40 |
| MurkrowSandstorm · 47/100 | Sandstorm | 47/100 | Uncommon | €2.35 |
| MurkrowPOP Series 1 · 8/17 | POP Series 1 | 8/17 | Uncommon | €6.67 |
| Muscle BandXY · 121/146 | XY | 121/146 | Uncommon | €3.10 |
| MusharnaFusion Strike · 122/264 | Fusion Strike | 122/264 | Uncommon | €0.08 |
| MusharnaBlack Bolt · 036/086 | Black Bolt | 036/086 | Uncommon | €0.04 |
| MusharnaPlasma Blast · 40/101 | Plasma Blast | 40/101 | Uncommon | €0.18 |
| MusharnaUnified Minds · 89/236 | Unified Minds | 89/236 | Uncommon | €0.11 |
| Mysterious ShardCrystal Guardians · 81/100 | Crystal Guardians | 81/100 | Uncommon | $0.50 |