 Psyduck #088/110Legendary Collection · Reverse Holofoil · 2002 | $775 | $7,800 | $54,491 |
 Psyduck #104/147Aquapolis · Reverse Holofoil · 2003 | $700 | — | — |
 Psyduck #73/100EX Sandstorm · Reverse Holofoil · 2003 | $436 | $1,422 | $3,550 |
 Slowpoke & Psyduck GX (Alternate Full Art) #218/236SM - Unified Minds · Holofoil · 2019 | $402 | — | — |
 Psyduck #87/127Platinum · Reverse Holofoil · 2009 | $350 | $3,207 | $3,848 |
 Psyduck #70/109EX Team Rocket Returns · Reverse Holofoil · 2004 | $300 | $2,785 | $4,082 |
 Psyduck #44/95EX Team Magma vs Team Aqua · Reverse Holofoil · 2004 | $262 | $467 | $626 |
 Slowpoke & Psyduck GX (Secret) #239/236SM - Unified Minds · Holofoil · 2019 | $254 | $275 | $1,224 |
| Psyduck #104/147Aquapolis · Normal · 2003 | $230 | $771 | $4,836 |
 Psyduck (Delta Species) #81/110EX Holon Phantoms · Reverse Holofoil · 2006 | $208 | — | — |
 Psyduck #74/102Triumphant · Reverse Holofoil · 2010 | $205 | $653 | $2,775 |
 Slowpoke & Psyduck GX (Full Art) #217/236SM - Unified Minds · Holofoil · 2019 | $164 | — | — |
![Misty's Psyduck [W Stamped] #054/132](/ci/t/166296_200w.jpg) Misty's Psyduck [W Stamped] #054/132WoTC Promo · Normal · 1999 | $157 | — | — |
 Slowpoke & Psyduck GX #35/236SM - Unified Minds · Holofoil · 2019 | $142 | $193 | $815 |
 Psyduck - 28/149 (Build-A-Bear Workshop Exclusive) #028/149Miscellaneous Cards & Products · Normal · 2026 | $130 | — | — |
 Psyduck (32) #32/149Boundaries Crossed · Reverse Holofoil · 2012 | $116 | — | — |
 Psyduck - 2/12 #002/012McDonald's Promos 2018 · Holofoil · 2018 | $93.71 | $528 | $633 |
 Psyduck #100/132Secret Wonders · Reverse Holofoil · 2007 | $86.14 | $752 | $1,343 |
 Psyduck (33) #33/149Boundaries Crossed · Reverse Holofoil · 2012 | $85.07 | — | — |
 Psyduck #20/53WoTC Promo · Normal · 1999 | $84.40 | $236 | $1,602 |
 Psyduck #079/105Neo Destiny · 1st Edition · 2002 | $75.89 | $178 | $1,713 |
 Psyduck #175/165Scarlet & Violet 151 · Holofoil · 2023 | $47.57 | $69.46 | $376 |
 Misty's Psyduck #193/182Destined Rivals · Holofoil · 2025 | $42.76 | $63.00 | $343 |
 Psyduck #226/217Ascended Heroes · Holofoil · 2026 | $40.65 | $60.70 | $185 |
 Psyduck - SM199 (Detective Pikachu Stamped) #SM199SM Promos · Holofoil · 2016 | $39.34 | — | — |
 Misty's Psyduck #054/132Gym Heroes · 1st Edition · 2000 | $38.20 | $135 | $1,423 |
| Psyduck #44/95EX Team Magma vs Team Aqua · Normal · 2004 | $32.75 | $227 | $927 |
| Psyduck #70/109EX Team Rocket Returns · Normal · 2004 | $29.96 | $172 | $978 |
 Misty's Psyduck #090/132Gym Challenge · 1st Edition · 2000 | $27.88 | $105 | $1,088 |
| Psyduck #079/105Neo Destiny · Unlimited · 2002 | $26.75 | $76.00 | $527 |
| Psyduck (Delta Species) #81/110EX Holon Phantoms · Normal · 2006 | $26.60 | — | — |
 Psyduck #40/236SM - Cosmic Eclipse · Reverse Holofoil · 2019 | $24.59 | — | — |
| Psyduck #87/127Platinum · Normal · 2009 | $24.20 | $216 | $423 |
 Sabrina's Psyduck #099/132Gym Challenge · 1st Edition · 2000 | $24.17 | $143 | $907 |
| Psyduck #73/100EX Sandstorm · Normal · 2003 | $19.10 | $109 | $443 |
 Psyduck #26/181SM - Team Up · Reverse Holofoil · 2019 | $17.87 | — | — |
| Psyduck (32) #32/149Boundaries Crossed · Normal · 2012 | $16.93 | $53.52 | $199 |
| Psyduck #74/102Triumphant · Normal · 2010 | $15.22 | $49.00 | $224 |
 Psyduck - 039/217 (Cosmos Holo) #039/217Prize Pack Series Cards · Holofoil · 2022 | $14.61 | — | — |
 Psyduck #16/122XY - BREAKpoint · Reverse Holofoil · 2016 | $13.84 | — | — |
| Psyduck #100/132Secret Wonders · Normal · 2007 | $13.36 | $20.50 | $211 |
 Psyduck #53/62Fossil · 1st Edition · 1999 | $12.71 | $126 | $1,143 |
| Misty's Psyduck #054/132Gym Heroes · Unlimited · 2000 | $11.54 | — | — |
| Psyduck #088/110Legendary Collection · Normal · 2002 | $10.62 | — | — |
 Psyduck - SM199 (In-Store Event Promo) #SM199SM Promos · Holofoil · 2016 | $9.72 | — | — |
 Psyduck #007Mega Evolution Promo · Holofoil · 2025 | $9.68 | — | — |
| Sabrina's Psyduck #099/132Gym Challenge · Unlimited · 2000 | $8.47 | $88.09 | $444 |
| Misty's Psyduck #090/132Gym Challenge · Unlimited · 2000 | $7.39 | $39.00 | $615 |
 Psyduck #28/149SM Base Set · Reverse Holofoil · 2017 | $7.36 | — | — |
 Psyduck #65/82Team Rocket · 1st Edition · 2000 | $7.04 | $49.00 | $607 |
| Psyduck (33) #33/149Boundaries Crossed · Normal · 2012 | $6.58 | $29.00 | $81.70 |
 Psyduck #11/68Hidden Fates · Reverse Holofoil · 2019 | $4.39 | — | — |
| Psyduck #40/236SM - Cosmic Eclipse · Normal · 2019 | $2.91 | — | — |
| Psyduck #53/62Fossil · Unlimited · 1999 | $2.32 | — | — |
| Psyduck #65/82Team Rocket · Unlimited · 2000 | $2.00 | $26.49 | $130 |
 Psyduck (Holo Common) #7/18Detective Pikachu · Holofoil · 2019 | $1.54 | — | — |
| Psyduck #26/181SM - Team Up · Normal · 2019 | $1.19 | — | — |
| Psyduck #16/122XY - BREAKpoint · Normal · 2016 | $1.07 | — | — |
| Psyduck #28/149SM Base Set · Normal · 2017 | $0.98 | — | — |
 Psyduck #028/189Astral Radiance · Reverse Holofoil · 2022 | $0.69 | $36.00 | $37.59 |
 Psyduck #024/203Evolving Skies · Reverse Holofoil · 2021 | $0.67 | — | — |
 Misty's Psyduck #045/182Destined Rivals · Reverse Holofoil · 2025 | $0.66 | — | — |
 Psyduck #039/217Prize Pack Series Cards · Normal · 2022 | $0.61 | — | — |
 Psyduck #054/165Scarlet & Violet 151 · Reverse Holofoil · 2023 | $0.59 | — | — |
| Psyduck #11/68Hidden Fates · Normal · 2019 | $0.42 | — | — |
| Psyduck #024/203Evolving Skies · Normal · 2021 | $0.29 | — | — |
| Psyduck #054/165Scarlet & Violet 151 · Normal · 2023 | $0.26 | — | — |
 Psyduck #039/217Ascended Heroes · Normal · 2026 | $0.25 | — | — |
| Psyduck #028/189Astral Radiance · Normal · 2022 | $0.25 | — | — |
| Misty's Psyduck #045/182Destined Rivals · Normal · 2025 | $0.23 | — | — |