 Squirtle #095/110Legendary Collection · Reverse Holofoil · 2002 | $550 | $1,478 | $15,275 |
 Ditto (Squirtle) - 64/113 (Games Expo 2007) #064/113Miscellaneous Cards & Products · Normal · 2026 | $426 | — | — |
 Ditto - 64/113 (Squirtle) (Delta Species Stamped) #064/113Miscellaneous Cards & Products · Reverse Holofoil · 2026 | $400 | — | — |
 Ditto - 040/113 (Squirtle) #40/113EX Delta Species · Reverse Holofoil · 2005 | $400 | $680 | $3,617 |
 Squirtle #46/95EX Team Magma vs Team Aqua · Reverse Holofoil · 2004 | $350 | $715 | $8,160 |
 Squirtle (132) #132/165Expedition · Reverse Holofoil · 2002 | $337 | $1,281 | $7,125 |
 Ditto - 64/113 (Squirtle) #064/113EX Delta Species · Reverse Holofoil · 2005 | $280 | $690 | $2,059 |
 Squirtle - 083/112 #83/112EX FireRed & LeafGreen · Reverse Holofoil · 2004 | $261 | $1,198 | $7,400 |
 Squirtle - 082/112 #82/112EX FireRed & LeafGreen · Reverse Holofoil · 2004 | $167 | $643 | $3,700 |
 Squirtle #063/102Base Set (Shadowless) · 1st Edition · 1999 | $136 | $483 | $2,751 |
 Squirtle - 064/100 #64/100EX Crystal Guardians · Reverse Holofoil · 2006 | $120 | $770 | $7,500 |
 Squirtle - 063/100 #63/100EX Crystal Guardians · Reverse Holofoil · 2006 | $103 | $405 | $4,048 |
 Squirtle #148/142Stellar Crown · Holofoil · 2024 | $100 | $113 | $393 |
 Squirtle - 007/165 (Pokemon Center Exclusive) #007/165Miscellaneous Cards & Products · Reverse Holofoil · 2026 | $99.09 | — | — |
 Squirtle #170/165Scarlet & Violet 151 · Holofoil · 2023 | $91.48 | $104 | $475 |
 Squirtle (131) #131/165Expedition · Reverse Holofoil · 2002 | $90.00 | $622 | $908 |
 Squirtle #63/95Unleashed · Reverse Holofoil · 2010 | $79.99 | $222 | $794 |
| Ditto - 040/113 (Squirtle) #40/113EX Delta Species · Normal · 2005 | $77.42 | $138 | $1,610 |
 Squirtle #014/017POP Series 4 · Normal · 2026 | $67.42 | $142 | $750 |
| Ditto - 64/113 (Squirtle) #064/113EX Delta Species · Normal · 2005 | $63.26 | — | — |
| Squirtle (131) #131/165Expedition · Normal · 2002 | $58.96 | $194 | $668 |
 Squirtle - 63/100 (City Championships) #063/100League & Championship Cards · Normal · 2016 | $58.35 | — | — |
 Squirtle #96/127Platinum · Reverse Holofoil · 2009 | $55.28 | — | — |
 Squirtle - 14/101 (Build-A-Bear Workshop Exclusive) #014/101Miscellaneous Cards & Products · Normal · 2026 | $49.02 | — | — |
 Squirtle #29/149Boundaries Crossed · Reverse Holofoil · 2012 | $42.83 | — | — |
| Squirtle (132) #132/165Expedition · Normal · 2002 | $42.78 | $209 | $1,079 |
| Squirtle #46/95EX Team Magma vs Team Aqua · Normal · 2004 | $39.89 | $149 | $900 |
| Squirtle #063/102Base Set (Shadowless) · Unlimited · 1999 | $33.50 | — | — |
| Squirtle - 083/112 #83/112EX FireRed & LeafGreen · Normal · 2004 | $33.00 | $176 | $830 |
 Squirtle - 2006 (Hiroki Yano) #83/112World Championship Decks · Normal · 2018 | $32.10 | — | — |
 Squirtle #112/132Secret Wonders · Reverse Holofoil · 2007 | $29.92 | — | — |
 Squirtle #039Mega Evolution Promo · Holofoil · 2025 | $21.52 | $33.97 | $117 |
 Squirtle #24/135Plasma Storm · Reverse Holofoil · 2013 | $19.14 | $57.00 | $224 |
 Squirtle #SWSH233Sword & Shield Promo Cards · Holofoil · 2019 | $17.45 | — | — |
| Squirtle - 064/100 #64/100EX Crystal Guardians · Normal · 2006 | $16.19 | $83.63 | $430 |
 Squirtle #001/034Trading Card Game Classic · Holofoil · 2023 | $14.96 | $27.99 | $89.99 |
 Squirtle (22) #22/181SM - Team Up · Reverse Holofoil · 2019 | $14.21 | $85.51 | $507 |
 Squirtle #14/101Plasma Blast · Reverse Holofoil · 2013 | $13.03 | — | — |
| Squirtle - 082/112 #82/112EX FireRed & LeafGreen · Normal · 2004 | $11.98 | — | — |
 Squirtle #68/82Team Rocket · 1st Edition · 2000 | $11.32 | $54.99 | $326 |
 Squirtle - 17/25 #017/025McDonald's 25th Anniversary Promos · Holofoil · 2021 | $9.57 | — | — |
 Squirtle (23) #23/181SM - Team Up · Reverse Holofoil · 2019 | $9.29 | $53.36 | $143 |
 Squirtle - 33/214 (Premium Collection Promo) #033/214Blister Exclusives · Holofoil · 2026 | $9.19 | — | — |
| Squirtle #112/132Secret Wonders · Normal · 2007 | $7.68 | $50.00 | $96.96 |
| Squirtle #96/127Platinum · Normal · 2009 | $6.82 | $41.32 | $447 |
 Squirtle #063/102Base Set · Normal · 1999 | $5.04 | — | — |
| Squirtle #095/110Legendary Collection · Normal · 2002 | $4.37 | $37.15 | $221 |
| Squirtle #63/95Unleashed · Normal · 2010 | $4.24 | — | — |
 Squirtle #063/102First Partner Pack · Normal · 2026 | $4.24 | — | — |
| Squirtle #68/82Team Rocket · Unlimited · 2000 | $4.20 | $25.00 | $149 |
 Squirtle #33/214SM - Unbroken Bonds · Reverse Holofoil · 2019 | $4.16 | — | — |
 Squirtle - 007/165 (Reverse Cosmos Holo) (Costco Exclusive) #007/165Miscellaneous Cards & Products · Holofoil · 2026 | $3.93 | — | — |
| Squirtle #14/101Plasma Blast · Normal · 2013 | $3.92 | — | — |
| Squirtle #29/149Boundaries Crossed · Normal · 2012 | $3.68 | — | — |
| Squirtle - 063/100 #63/100EX Crystal Guardians · Normal · 2006 | $3.49 | — | — |
| Squirtle (22) #22/181SM - Team Up · Normal · 2019 | $2.82 | $32.99 | $183 |
| Squirtle #24/135Plasma Storm · Normal · 2013 | $2.82 | — | — |
 Squirtle - 048 (Cosmos Holo) #048Scarlet & Violet Promo Cards · Holofoil · 2023 | $2.73 | — | — |
 Squirtle #093/130Base Set 2 · Normal · 2000 | $1.99 | $39.00 | $212 |
| Squirtle (23) #23/181SM - Team Up · Normal · 2019 | $1.82 | — | — |
| Squirtle - 17/25 #017/025McDonald's 25th Anniversary Promos · Normal · 2021 | $1.27 | — | — |
 Squirtle #015/078Pokemon GO · Reverse Holofoil · 2022 | $1.01 | $20.00 | $75.00 |
| Squirtle #33/214SM - Unbroken Bonds · Normal · 2019 | $0.69 | — | — |
 Squirtle #007/165Scarlet & Violet 151 · Reverse Holofoil · 2023 | $0.39 | — | — |
| Squirtle #015/078Pokemon GO · Normal · 2022 | $0.38 | $19.73 | $130 |
| Squirtle #007/165Scarlet & Violet 151 · Normal · 2023 | $0.25 | $18.61 | $108 |