 Nidoking (150) #150/147Aquapolis · Holofoil · 2003 | $400 | — | — |
 Nidoking #011/102Base Set (Shadowless) · 1st Edition Holofoil · 1999 | $350 | $3,081 | $34,160 |
 Nidoking #031/110Legendary Collection · Reverse Holofoil · 2002 | $263 | $1,250 | $2,792 |
 Nidoking (H18) #H18/H32Aquapolis · Holofoil · 2003 | $231 | $1,325 | $5,747 |
| Nidoking #011/102Base Set (Shadowless) · Unlimited Holofoil · 1999 | $178 | — | — |
 Giovanni's Nidoking #007/132Gym Challenge · 1st Edition Holofoil · 2000 | $160 | $525 | $4,500 |
 Nidoking #8/112EX FireRed & LeafGreen · Holofoil · 2004 | $80.05 | $414 | $1,603 |
| Giovanni's Nidoking #007/132Gym Challenge · Unlimited Holofoil · 2000 | $78.69 | $217 | $2,581 |
 Nidoking (Delta Species) #6/101EX Dragon Frontiers · Holofoil · 2006 | $69.15 | $522 | $1,855 |
| Nidoking (Delta Species) #6/101EX Dragon Frontiers · Reverse Holofoil · 2006 | $68.66 | $730 | $3,325 |
 Team Rocket's Nidoking ex #233/182Destined Rivals · Holofoil · 2025 | $66.48 | $85.00 | $209 |
| Nidoking #8/112EX FireRed & LeafGreen · Reverse Holofoil · 2004 | $58.99 | $536 | $4,085 |
 Nidoking #011/130Base Set 2 · Holofoil · 2000 | $43.73 | $158 | $411 |
 Nidoking #011/102Base Set · Holofoil · 1999 | $41.82 | — | — |
 Nidoking (24) #024/147Aquapolis · Reverse Holofoil · 2003 | $41.38 | $380 | $457 |
 Nidoking #34/132Secret Wonders · Reverse Holofoil · 2007 | $31.30 | $48.49 | $283 |
| Nidoking #8/112EX FireRed & LeafGreen · Normal · 2004 | $28.78 | — | — |
 Nidoking - 6/102 (Cracked Ice Holo) #006/102Deck Exclusives · Holofoil · 2016 | $27.30 | — | — |
 Nidoking #58/116Plasma Freeze · Reverse Holofoil · 2013 | $19.69 | — | — |
| Nidoking (24) #024/147Aquapolis · Normal · 2003 | $16.99 | $49.99 | $191 |
| Nidoking #031/110Legendary Collection · Normal · 2002 | $15.55 | $56.44 | $406 |
 Nidoking #174/165Scarlet & Violet 151 · Holofoil · 2023 | $15.34 | $33.14 | $138 |
 Nidoking #29/111Rising Rivals · Reverse Holofoil · 2009 | $14.29 | $65.00 | $261 |
 Nidoking #6/102Triumphant · Holofoil · 2010 | $13.46 | $100 | $762 |
| Nidoking #6/102Triumphant · Reverse Holofoil · 2010 | $11.00 | $71.72 | $176 |
| Nidoking #29/111Rising Rivals · Normal · 2009 | $7.57 | $55.38 | $81.00 |
 Team Rocket's Nidoking ex #119/182Prize Pack Series Cards · Holofoil · 2022 | $5.22 | — | — |
 Nidoking #45/108XY - Evolutions · Holofoil · 2016 | $5.14 | — | — |
 Nidoking #45/114XY - Steam Siege · Reverse Holofoil · 2016 | $4.59 | — | — |
| Nidoking #45/108XY - Evolutions · Reverse Holofoil · 2016 | $4.47 | — | — |
| Nidoking #34/132Secret Wonders · Normal · 2007 | $4.06 | — | — |
 Nidoking BREAK #46/108XY - Evolutions · Holofoil · 2016 | $3.94 | — | — |
| Nidoking #58/116Plasma Freeze · Normal · 2013 | $3.90 | $24.86 | $62.38 |
 Nidoking #59/181SM - Team Up · Reverse Holofoil · 2019 | $3.10 | $20.38 | $47.37 |
 Nidoking - 6/102 #006/102Deck Exclusives · Normal · 2016 | $2.96 | — | — |
 Team Rocket's Nidoking ex #216/182Destined Rivals · Holofoil · 2025 | $2.60 | $20.54 | $58.30 |
 Nidoking - 45/108 (XY Evolutions) #045/108Deck Exclusives · Normal · 2016 | $1.69 | — | — |
 Nidoking #034/165Scarlet & Violet 151 · Reverse Holofoil · 2023 | $1.46 | $19.70 | $38.39 |
 Team Rocket's Nidoking ex #217Scarlet & Violet Promo Cards · Holofoil · 2023 | $1.13 | $17.98 | $82.18 |
| Nidoking #59/181SM - Team Up · Normal · 2019 | $1.06 | $14.13 | $36.91 |
| Nidoking #45/114XY - Steam Siege · Normal · 2016 | $0.77 | — | — |
 Team Rocket's Nidoking ex #119/182Destined Rivals · Holofoil · 2025 | $0.70 | — | — |
| Nidoking #034/165Scarlet & Violet 151 · Holofoil · 2023 | $0.31 | — | — |