 Squirtle (132) #132/165Expedition · Reverse Holofoil · 2002 | $458 | $2,679 | $7,125 |
 Ditto (Squirtle) - 64/113 (Games Expo 2007) #064/113Miscellaneous Cards & Products · Normal · 2026 | $426 | — | — |
 Squirtle #46/95EX Team Magma vs Team Aqua · Reverse Holofoil · 2004 | $367 | $1,540 | $8,017 |
 Squirtle - 083/112 #83/112EX FireRed & LeafGreen · Reverse Holofoil · 2004 | $300 | $2,439 | $9,414 |
 Ditto - 64/113 (Squirtle) #064/113EX Delta Species · Reverse Holofoil · 2005 | $280 | $1,531 | $9,000 |
 Squirtle - 082/112 #82/112EX FireRed & LeafGreen · Reverse Holofoil · 2004 | $250 | $1,231 | $3,543 |
 Ditto - 040/113 (Squirtle) #40/113EX Delta Species · Reverse Holofoil · 2005 | $227 | $1,811 | $4,300 |
 Ditto - 64/113 (Squirtle) (Delta Species Stamped) #064/113Miscellaneous Cards & Products · Reverse Holofoil · 2026 | $225 | — | — |
 Squirtle #063/102Base Set (Shadowless) · 1st Edition · 1999 | $139 | $519 | $3,770 |
 Squirtle - 064/100 #64/100EX Crystal Guardians · Reverse Holofoil · 2006 | $129 | — | — |
 Squirtle - 063/100 #63/100EX Crystal Guardians · Reverse Holofoil · 2006 | $114 | $685 | $6,822 |
 Squirtle - 007/165 (Pokemon Center Exclusive) #007/165Miscellaneous Cards & Products · Reverse Holofoil · 2026 | $96.05 | — | — |
 Squirtle (131) #131/165Expedition · Reverse Holofoil · 2002 | $90.00 | $1,055 | $21,763 |
 Squirtle #148/142Stellar Crown · Holofoil · 2024 | $86.84 | $108 | $312 |
| Ditto - 040/113 (Squirtle) #40/113EX Delta Species · Normal · 2005 | $82.09 | $250 | $1,632 |
 Squirtle #63/95Unleashed · Reverse Holofoil · 2010 | $79.99 | $222 | $820 |
 Squirtle #170/165Scarlet & Violet 151 · Holofoil · 2023 | $79.11 | $95.00 | $445 |
 Squirtle - 63/100 (City Championships) #063/100League & Championship Cards · Normal · 2016 | $75.45 | — | — |
 Squirtle #014/017POP Series 4 · Normal · 2026 | $69.19 | $275 | $886 |
| Squirtle (131) #131/165Expedition · Normal · 2002 | $67.83 | $300 | $2,000 |
| Ditto - 64/113 (Squirtle) #064/113EX Delta Species · Normal · 2005 | $63.12 | — | — |
 Squirtle #96/127Platinum · Reverse Holofoil · 2009 | $55.28 | — | — |
 Squirtle - 14/101 (Build-A-Bear Workshop Exclusive) #014/101Miscellaneous Cards & Products · Normal · 2026 | $51.98 | — | — |
| Squirtle - 083/112 #83/112EX FireRed & LeafGreen · Normal · 2004 | $49.70 | $290 | $860 |
| Squirtle (132) #132/165Expedition · Normal · 2002 | $47.88 | $282 | $1,892 |
 Squirtle #29/149Boundaries Crossed · Reverse Holofoil · 2012 | $43.80 | — | — |
 Squirtle - 2006 (Hiroki Yano) #83/112World Championship Decks · Normal · 2018 | $41.19 | — | — |
| Squirtle #46/95EX Team Magma vs Team Aqua · Normal · 2004 | $39.52 | — | — |
| Squirtle #063/102Base Set (Shadowless) · Unlimited · 1999 | $35.78 | — | — |
 Squirtle #112/132Secret Wonders · Reverse Holofoil · 2007 | $28.37 | — | — |
 Squirtle #039Mega Evolution Promo · Holofoil · 2025 | $19.90 | $26.64 | $81.01 |
 Squirtle #24/135Plasma Storm · Reverse Holofoil · 2013 | $19.10 | $57.00 | $240 |
| Squirtle - 064/100 #64/100EX Crystal Guardians · Normal · 2006 | $19.08 | — | — |
 Squirtle #14/101Plasma Blast · Reverse Holofoil · 2013 | $16.64 | $163 | $1,861 |
 Squirtle #001/034Trading Card Game Classic · Holofoil · 2023 | $16.45 | $28.49 | $107 |
 Squirtle #SWSH233Sword & Shield Promo Cards · Holofoil · 2019 | $16.38 | — | — |
| Squirtle - 082/112 #82/112EX FireRed & LeafGreen · Normal · 2004 | $14.72 | — | — |
 Squirtle (22) #22/181SM - Team Up · Reverse Holofoil · 2019 | $14.03 | — | — |
 Squirtle #68/82Team Rocket · 1st Edition · 2000 | $11.70 | $45.83 | $406 |
 Squirtle - 33/214 (Premium Collection Promo) #033/214Blister Exclusives · Holofoil · 2026 | $10.25 | — | — |
 Squirtle (23) #23/181SM - Team Up · Reverse Holofoil · 2019 | $9.88 | $53.14 | $143 |
 Squirtle - 17/25 #017/025McDonald's 25th Anniversary Promos · Holofoil · 2021 | $8.32 | — | — |
| Squirtle #112/132Secret Wonders · Normal · 2007 | $8.27 | $53.00 | $96.96 |
| Squirtle #96/127Platinum · Normal · 2009 | $7.75 | $49.99 | $441 |
 Squirtle #063/102Base Set · Normal · 1999 | $6.89 | — | — |
 Squirtle #095/110Legendary Collection · Normal · 2002 | $5.45 | — | — |
 Squirtle #063/102First Partner Pack · Normal · 2026 | $4.27 | — | — |
| Squirtle #14/101Plasma Blast · Normal · 2013 | $4.08 | — | — |
 Squirtle - 007/165 (Reverse Cosmos Holo) (Costco Exclusive) #007/165Miscellaneous Cards & Products · Holofoil · 2026 | $3.95 | — | — |
| Squirtle #63/95Unleashed · Normal · 2010 | $3.93 | — | — |
 Squirtle #33/214SM - Unbroken Bonds · Reverse Holofoil · 2019 | $3.88 | — | — |
| Squirtle - 063/100 #63/100EX Crystal Guardians · Normal · 2006 | $3.51 | — | — |
| Squirtle #68/82Team Rocket · Unlimited · 2000 | $3.41 | — | — |
| Squirtle #29/149Boundaries Crossed · Normal · 2012 | $3.21 | — | — |
| Squirtle (22) #22/181SM - Team Up · Normal · 2019 | $2.96 | — | — |
| Squirtle #24/135Plasma Storm · Normal · 2013 | $2.91 | — | — |
 Squirtle - 048 (Cosmos Holo) #048Scarlet & Violet Promo Cards · Holofoil · 2023 | $2.18 | — | — |
| Squirtle (23) #23/181SM - Team Up · Normal · 2019 | $2.01 | — | — |
 Squirtle #093/130Base Set 2 · Normal · 2000 | $1.80 | — | — |
| Squirtle - 17/25 #017/025McDonald's 25th Anniversary Promos · Normal · 2021 | $1.46 | — | — |
 Squirtle #015/078Pokemon GO · Reverse Holofoil · 2022 | $0.85 | $28.00 | $75.00 |
| Squirtle #33/214SM - Unbroken Bonds · Normal · 2019 | $0.83 | — | — |
 Squirtle #007/165Scarlet & Violet 151 · Reverse Holofoil · 2023 | $0.45 | — | — |
| Squirtle #007/165Scarlet & Violet 151 · Normal · 2023 | $0.33 | $23.94 | $113 |
| Squirtle #015/078Pokemon GO · Normal · 2022 | $0.32 | $19.30 | $113 |