Cards ranked by grading upside — PSA gem rate, raw-to-PSA-10 multiple, and probability-weighted grading ROI. Including thin, low-sale markets.
| Card | Set | Raw | Gem rate | PSA 10 | Multiple | Grade ROI | Pop 10 | Sales 30D |
|---|---|---|---|---|---|---|---|---|
 Pikachu#37/82 | Flight of Legends | $6.00 | 26% | $2,144 | 357.3× | +1,684% | 40 | — |
 Groudon-EX#54/52 |
| Hail Blizzard |
| $45.00 |
| 43% |
| $2,600 |
| 57.8× |
| +1,489% |
| 74 |
| 1 |
 Surfing Pikachu#264 | XY Promos | $20.70 | 67% | $1,000 | 48.3× | +1,358% | 811 | 3 |
 Raichu ex#23/53 | Miracle of the Desert | $36.00 | 28% | $3,000 | 83.3× | +1,288% | 57 | — |
 Team Japan's Pikachu#50 | XY Promos | $100 | 30% | $5,500 | 55× | +1,239% | 811 | 2 |
 Pikachu#206 | XY Promos | $31.54 | 78% | $839 | 26.6× | +1,053% | 1,865 | 7 |
 Skyla#164 | XY Promos | $30.00 | 72% | $780 | 26× | +921% | 1,587 | — |
 Pikachu#32/70 | SoulSilver Collection | $10.00 | 45% | $770 | 77× | +890% | 293 | — |
 Ninetales ex#18/83 | Undone Seal | $20.00 | 38% | $1,093 | 54.6× | +833% | 63 | 3 |
 Dark Slowking#44/84 | Rocket Gang Strikes Back | $20.00 | 36% | $1,150 | 57.5× | +827% | 66 | 1 |
 Snorlax#62/88 | Mysterious Mountains | $89.99 | 38% | $2,750 | 30.6× | +817% | 28 | — |
 M Gengar-EX#79 | XY Promos | $35.99 | 58% | $955 | 26.5× | +808% | 1,873 | 3 |
 Magikarp#20/70 | VMAX Rising | $9.99 | 62% | $435 | 43.5× | +672% | 434 | — |
 Hariyama ex#49/82 | Clash of the Blue Sky | $14.74 | 32% | $925 | 62.8× | +648% | 27 | — |
 Rayquaza V#75/67 | Blue Sky Stream | $29.00 | 87% | $462 | 15.9× | +642% | 776 | 1 |
 Sableye#44/53 | Miracle of the Desert | $20.00 | 36% | $900 | 45× | +612% | 21 | — |
 Blastoise δ#49/75 | Miracle Crystal | $70.00 | 24% | $2,793 | 39.9× | +609% | 62 | 2 |
 Greninja BREAK#028/171 | The Best of XY | $13.73 | 88% | $300 | 21.8× | +584% | 195 | 1 |
 Gyarados δ#24/52 | Holon Phantom | $56.27 | 27% | $2,000 | 35.5× | +562% | 60 | — |
 Charizard#12/59 | Freeze Bolt | $25.00 | 51% | $643 | 25.7× | +558% | 128 | 2 |
 Mewtwo-GX#82/72 | Shining Legends | $366 | 57% | $4,500 | 12.3× | +556% | 2,361 | 3 |
 Torchic#103 | XY Promos | $11.17 | 70% | $338 | 30.2× | +553% | 105 | 2 |
 Lugia V#322 | Sword & Shield Promos | $17.62 | 89% | $300 | 17× | +526% | 1,724 | 3 |
 Pikachu#242 | Sun & Moon Promos | $70.00 | 74% | $800 | 11.4× | +523% | 735 | 1 |
 Lugia#228 | XY Promos | $59.99 | 79% | $650 | 10.8× | +504% | 240 | — |
 Dark Celebi#71/84 | Rocket Gang Strikes Back | $87.00 | 40% | $1,680 | 19.3× | +499% | 97 | 2 |
 Pikachu#214 | Sun & Moon Promos | $20.00 | 66% | $407 | 20.3× | +494% | 275 | 3 |
 Eevee#295 | Sun & Moon Promos | $6.99 | 63% | $300 | 42.8× | +491% | 161 | — |
 Latios#146 | XY Promos | $14.99 | 65% | $365 | 24.4× | +491% | 119 | — |
 Pikachu#70 | XY Promos | $83.33 | 24% | $2,650 | 31.8× | +489% | 260 | 2 |
 Pikachu#207 | Sun & Moon Promos | $37.00 | 67% | $547 | 14.8× | +488% | 444 | 1 |
 Ludicolo#20/53 | Miracle of the Desert | $20.00 | 39% | $669 | 33.5× | +487% | 15 | — |
 Shining Mew#41/72 | Shining Legends | $108 | 64% | $1,200 | 11.1× | +477% | 1,780 | 3 |
 Mewtwo#176 | XY Promos | $53.14 | 80% | $552 | 10.4× | +466% | 346 | 1 |
 Clefable ex#66/82 | Flight of Legends | $28.00 | 39% | $750 | 26.8× | +454% | 56 | — |
 Pikachu#4/4 | Pikachu's New Friends | $10.95 | 59% | $335 | 30.5× | +453% | 701 | 3 |
 Rayquaza#3 | Sword & Shield Promos | $12.23 | 79% | $259 | 21.2× | +448% | 1,850 | 7 |
 Giratina#35/70 | Plasma Gale | $9.49 | 63% | $300 | 31.6× | +446% | 37 | 1 |
 Slowking#53/87 | Wind from the Sea | $64.67 | 29% | $1,663 | 25.7× | +439% | 61 | 1 |
 Pikachu V#104/100 | Amazing Volt Tackle | $40.31 | 86% | $399 | 9.9× | +426% | 3,635 | 1 |
 Jolteon-EX#195 | XY Promos | $5.00 | 82% | $191 | 38.2× | +424% | 655 | 1 |
 Victini#70/66 | Red Collection | $69.99 | 38% | $1,300 | 18.6× | +414% | 262 | — |
 Reshiram#161 | XY Promos | $28.49 | 70% | $383 | 13.4× | +401% | 150 | 1 |
 Gengar-EX#048/131 | Premium Champion Pack | $75.00 | 66% | $750 | 10× | +393% | 458 | 2 |
 Dragonite ex#38/54 | Rulers of the Heavens | $135 | 24% | $3,338 | 24.7× | +393% | 111 | 2 |
 Pikachu#3 | Sun & Moon Promos | $99.99 | 68% | $905 | 9.1× | +390% | 385 | 2 |
 Rayquaza-EX#37/50 | Dragon Blade | $8.99 | 41% | $407 | 45.3× | +388% | 11 | 1 |
 Mawile#63/75 | Miracle Crystal | $15.95 | 59% | $335 | 21× | +386% | 19 | — |
 Gyarados#21/81 | Bandit Ring | $85.18 | 71% | $717 | 8.4× | +361% | 343 | 8 |
 Pikachu#68 | XY Promos | $99.84 | 23% | $2,500 | 25× | +357% | 239 | 2 |
Grade ROI assumes a flat ~$25 grading fee. Run the exact numbers
