 Nidoking (150) #150/147Aquapolis · Holofoil · 2003 | $500 | $3,167 | $18,021 |
 Nidoking #011/102Base Set (Shadowless) · 1st Edition Holofoil · 1999 | $350 | $2,108 | $14,502 |
 Nidoking (H18) #H18/H32Aquapolis · Holofoil · 2003 | $231 | $673 | $3,125 |
 Nidoking #031/110Legendary Collection · Reverse Holofoil · 2002 | $226 | $1,122 | $3,752 |
 Giovanni's Nidoking #007/132Gym Challenge · 1st Edition Holofoil · 2000 | $220 | $450 | $2,704 |
| Nidoking #011/102Base Set (Shadowless) · Unlimited Holofoil · 1999 | $166 | — | — |
 Team Rocket's Nidoking ex #233/182Destined Rivals · Holofoil · 2025 | $91.61 | $100 | $247 |
| Giovanni's Nidoking #007/132Gym Challenge · Unlimited Holofoil · 2000 | $76.84 | $161 | $529 |
 Nidoking #8/112EX FireRed & LeafGreen · Holofoil · 2004 | $76.29 | $262 | $1,603 |
 Nidoking (Delta Species) #6/101EX Dragon Frontiers · Reverse Holofoil · 2006 | $69.75 | $434 | $3,325 |
| Nidoking (Delta Species) #6/101EX Dragon Frontiers · Holofoil · 2006 | $59.74 | — | — |
| Nidoking #8/112EX FireRed & LeafGreen · Reverse Holofoil · 2004 | $58.99 | $351 | $2,201 |
 Nidoking (24) #024/147Aquapolis · Reverse Holofoil · 2003 | $48.00 | $183 | $219 |
 Nidoking #011/130Base Set 2 · Holofoil · 2000 | $43.66 | $109 | $411 |
 Nidoking #011/102Base Set · Holofoil · 1999 | $38.83 | — | — |
| Nidoking #8/112EX FireRed & LeafGreen · Normal · 2004 | $28.78 | $262 | $1,603 |
 Nidoking #58/116Plasma Freeze · Reverse Holofoil · 2013 | $19.62 | $65.52 | $150 |
 Nidoking #34/132Secret Wonders · Reverse Holofoil · 2007 | $17.75 | $48.49 | $234 |
| Nidoking (24) #024/147Aquapolis · Normal · 2003 | $17.13 | $65.15 | $192 |
 Nidoking #174/165Scarlet & Violet 151 · Holofoil · 2023 | $16.99 | $30.50 | $143 |
 Nidoking - 6/102 (Cracked Ice Holo) #006/102Deck Exclusives · Holofoil · 2016 | $14.92 | — | — |
 Nidoking #29/111Rising Rivals · Reverse Holofoil · 2009 | $14.29 | $39.99 | $191 |
| Nidoking #031/110Legendary Collection · Normal · 2002 | $14.29 | $52.50 | $81.47 |
 Nidoking #6/102Triumphant · Holofoil · 2010 | $12.35 | $79.99 | $772 |
| Nidoking #6/102Triumphant · Reverse Holofoil · 2010 | $10.97 | $67.48 | $150 |
| Nidoking #29/111Rising Rivals · Normal · 2009 | $7.51 | $38.00 | $81.00 |
 Team Rocket's Nidoking ex #119/182Prize Pack Series Cards · Holofoil · 2022 | $5.13 | — | — |
 Nidoking #45/108XY - Evolutions · Reverse Holofoil · 2016 | $4.88 | — | — |
| Nidoking #45/108XY - Evolutions · Holofoil · 2016 | $4.72 | — | — |
 Team Rocket's Nidoking ex #216/182Destined Rivals · Holofoil · 2025 | $4.34 | $19.50 | $60.14 |
 Nidoking #45/114XY - Steam Siege · Reverse Holofoil · 2016 | $4.27 | — | — |
| Nidoking #34/132Secret Wonders · Normal · 2007 | $3.96 | — | — |
| Nidoking #58/116Plasma Freeze · Normal · 2013 | $3.81 | $29.84 | $72.93 |
 Nidoking BREAK #46/108XY - Evolutions · Holofoil · 2016 | $3.44 | $20.90 | $103 |
 Nidoking #59/181SM - Team Up · Reverse Holofoil · 2019 | $2.99 | $19.94 | $46.60 |
 Nidoking - 6/102 #006/102Deck Exclusives · Normal · 2016 | $2.87 | — | — |
 Nidoking #034/165Scarlet & Violet 151 · Reverse Holofoil · 2023 | $1.59 | $19.70 | $38.39 |
 Nidoking - 45/108 (XY Evolutions) #045/108Deck Exclusives · Normal · 2016 | $1.48 | — | — |
| Nidoking #59/181SM - Team Up · Normal · 2019 | $1.06 | $14.94 | $38.25 |
 Team Rocket's Nidoking ex #217Scarlet & Violet Promo Cards · Holofoil · 2023 | $1.05 | $14.82 | $50.00 |
 Team Rocket's Nidoking ex #119/182Destined Rivals · Holofoil · 2025 | $0.79 | — | — |
| Nidoking #45/114XY - Steam Siege · Normal · 2016 | $0.79 | $19.00 | $70.00 |
| Nidoking #034/165Scarlet & Violet 151 · Holofoil · 2023 | $0.28 | $11.71 | $59.99 |