 Slowking (H22) #H22/H32Aquapolis · Holofoil · 2003 | $600 | $5,021 | $16,500 |
 Slowking #14/18Southern Islands · Reverse Holofoil · 2001 | $468 | — | — |
 Dark Slowking #9/109EX Team Rocket Returns · Reverse Holofoil · 2004 | $349 | $1,233 | $4,421 |
 Slowking #014/111Neo Genesis · 1st Edition Holofoil · 2000 | $264 | — | — |
 Slowking #034/147Aquapolis · Reverse Holofoil · 2003 | $235 | $1,025 | $2,403 |
| Dark Slowking #9/109EX Team Rocket Returns · Holofoil · 2004 | $157 | — | — |
 Dark Slowking #020/105Neo Destiny · 1st Edition · 2002 | $133 | $479 | $1,932 |
 Slowking (Prime) #85/90Undaunted · Holofoil · 2010 | $125 | $1,366 | $8,600 |
 Galarian Slowking V (Alternate Full Art) #179/198Chilling Reign · Holofoil · 2021 | $112 | $113 | $286 |
 Slowking #14/115EX Unseen Forces · Reverse Holofoil · 2005 | $94.15 | — | — |
| Slowking #014/111Neo Genesis · Unlimited Holofoil · 2000 | $92.24 | — | — |
 Slowking #28/113EX Delta Species · Reverse Holofoil · 2005 | $91.59 | — | — |
| Slowking #14/115EX Unseen Forces · Holofoil · 2005 | $67.44 | $400 | $3,700 |
 Slowking #12/123HeartGold SoulSilver · Holofoil · 2010 | $65.58 | $80.00 | $233 |
| Dark Slowking #9/109EX Team Rocket Returns · Normal · 2004 | $60.00 | — | — |
| Dark Slowking #020/105Neo Destiny · Unlimited · 2002 | $51.25 | $150 | $163 |
| Slowking #12/123HeartGold SoulSilver · Reverse Holofoil · 2010 | $46.74 | $221 | $570 |
| Slowking #034/147Aquapolis · Normal · 2003 | $37.73 | $86.36 | $299 |
 Slowking #32/95Call of Legends · Reverse Holofoil · 2011 | $31.50 | — | — |
 Slowking #28/106Great Encounters · Reverse Holofoil · 2008 | $30.94 | $250 | $1,866 |
 Slowking - 21/122 (Cosmos Holo) #021/122Alternate Art Promos · Holofoil · 2026 | $15.40 | — | — |
 Slowking #49/108Dark Explorers · Reverse Holofoil · 2012 | $14.35 | $50.00 | $260 |
 Galarian Slowking VMAX (Secret) #207/198Chilling Reign · Holofoil · 2021 | $12.24 | — | — |
 Slowking #55/214SM - Lost Thunder · Reverse Holofoil · 2018 | $9.90 | $39.80 | $80.11 |
 Slowking ex #238/193Paldea Evolved · Holofoil · 2023 | $9.27 | $24.13 | $160 |
| Slowking #28/113EX Delta Species · Normal · 2005 | $6.78 | — | — |
| Slowking #49/108Dark Explorers · Normal · 2012 | $6.69 | $29.99 | $82.90 |
 Galarian Slowking V (Full Art) #178/198Chilling Reign · Holofoil · 2021 | $5.91 | $41.00 | $61.94 |
| Slowking #32/95Call of Legends · Normal · 2011 | $5.25 | — | — |
| Slowking #28/106Great Encounters · Normal · 2008 | $4.50 | — | — |
 Galarian Slowking (Cosmos Holo) #098/198Miscellaneous Cards & Products · Holofoil · 2026 | $3.17 | — | — |
| Slowking #55/214SM - Lost Thunder · Normal · 2018 | $3.02 | $19.95 | $45.00 |
 Galarian Slowking VMAX #100/198Chilling Reign · Holofoil · 2021 | $1.95 | $11.02 | $66.13 |
 Slowking #21/122XY - BREAKpoint · Reverse Holofoil · 2016 | $1.65 | — | — |
| Slowking #21/122XY - BREAKpoint · Holofoil · 2016 | $1.35 | — | — |
 Slowking - 21/122 (XY BREAKpoint) #021/122Deck Exclusives · Normal · 2016 | $1.34 | — | — |
 Slowking ex #086/193Paldea Evolved · Holofoil · 2023 | $1.20 | $14.99 | $42.31 |
 Galarian Slowking V #099/198Chilling Reign · Holofoil · 2021 | $1.14 | $20.55 | $51.00 |
 Slowking #48/147SM - Burning Shadows · Reverse Holofoil · 2017 | $1.06 | $22.50 | $41.69 |
 Galarian Slowking #098/198Chilling Reign · Reverse Holofoil · 2021 | $0.85 | $13.41 | $35.88 |
 Slowking #058/142Stellar Crown · Reverse Holofoil · 2024 | $0.56 | $18.00 | $45.50 |
| Slowking #48/147SM - Burning Shadows · Normal · 2017 | $0.55 | $25.00 | $37.94 |
| Galarian Slowking #098/198Chilling Reign · Holofoil · 2021 | $0.50 | $19.25 | $35.34 |
 Slowking #019/131Prismatic Evolutions · Reverse Holofoil · 2025 | $0.27 | — | — |
| Slowking #058/142Stellar Crown · Normal · 2024 | $0.24 | $11.73 | $15.99 |
| Slowking #019/131Prismatic Evolutions · Normal · 2025 | $0.10 | — | — |