 Flaaffy #077/165Expedition · Reverse Holofoil · 2002 | $99.97 | $355 | $426 |
 Dark Flaaffy #33/109EX Team Rocket Returns · Reverse Holofoil · 2004 | $94.99 | $280 | $1,800 |
 Flaaffy #007/017POP Series 7 · Normal · 2026 | $34.00 | — | — |
 Flaaffy (Delta Species) #30/101EX Dragon Frontiers · Reverse Holofoil · 2006 | $30.25 | — | — |
 Flaaffy #047/147Aquapolis · Reverse Holofoil · 2003 | $24.99 | $89.99 | $799 |
 Flaaffy #56/115EX Unseen Forces · Reverse Holofoil · 2005 | $21.07 | — | — |
 Dark Flaaffy #034/105Neo Destiny · 1st Edition · 2002 | $17.06 | $46.00 | $268 |
 Flaaffy #27/97EX Dragon · Reverse Holofoil · 2003 | $15.92 | $50.95 | $448 |
| Flaaffy #047/147Aquapolis · Normal · 2003 | $15.03 | $35.11 | $173 |
| Flaaffy (Delta Species) #30/101EX Dragon Frontiers · Normal · 2006 | $11.02 | $21.00 | $81.00 |
| Dark Flaaffy #33/109EX Team Rocket Returns · Normal · 2004 | $10.52 | — | — |
| Flaaffy #077/165Expedition · Normal · 2002 | $9.67 | $47.00 | $341 |
 Flaaffy - SWSH122 (Prerelease) #SWSH122Sword & Shield Promo Cards · Holofoil · 2019 | $8.46 | — | — |
 Flaaffy (Secret) #280/264Fusion Strike · Holofoil · 2021 | $7.73 | $16.03 | $75.00 |
 Flaaffy #43/95Call of Legends · Reverse Holofoil · 2011 | $7.60 | $21.34 | $139 |
 Flaaffy #28/64Neo Revelation · 1st Edition · 2001 | $7.45 | $33.58 | $236 |
 Flaaffy #034/111Neo Genesis · 1st Edition · 2000 | $6.83 | $47.00 | $144 |
 Flaaffy #39/124Dragons Exalted · Reverse Holofoil · 2012 | $6.43 | $37.43 | $91.64 |
| Dark Flaaffy #034/105Neo Destiny · Unlimited · 2002 | $5.47 | $27.00 | $55.91 |
 Flaaffy #TG03/TG30Silver Tempest Trainer Gallery · Holofoil · 2022 | $5.21 | $20.10 | $115 |
 Flaaffy #50/132Secret Wonders · Reverse Holofoil · 2007 | $4.99 | $42.55 | $122 |
| Flaaffy #27/97EX Dragon · Normal · 2003 | $4.83 | $35.00 | $61.59 |
| Flaaffy #034/111Neo Genesis · Unlimited · 2000 | $4.24 | $10.01 | $46.00 |
 Flaaffy #48/127Platinum · Reverse Holofoil · 2009 | $3.97 | $15.00 | $104 |
 Flaaffy #42/123HeartGold SoulSilver · Reverse Holofoil · 2010 | $3.82 | $34.52 | $92.51 |
 Flaaffy (#3) #3/30HGSS Trainer Kit: Gyarados & Raichu · Normal · 2010 | $2.63 | — | — |
| Flaaffy #28/64Neo Revelation · Unlimited · 2001 | $2.61 | $20.30 | $33.87 |
 Flaaffy #015Scarlet & Violet Promo Cards · Normal · 2023 | $2.31 | — | — |
 Flaaffy - Pikachu 5 #108Battle Academy 2024 · Normal · 2024 | $2.05 | — | — |
| Flaaffy #48/127Platinum · Normal · 2009 | $1.37 | $19.99 | $58.52 |
| Flaaffy #56/115EX Unseen Forces · Normal · 2005 | $1.25 | — | — |
| Flaaffy #42/123HeartGold SoulSilver · Normal · 2010 | $1.19 | $22.65 | $58.02 |
| Flaaffy #50/132Secret Wonders · Normal · 2007 | $1.19 | $7.00 | $52.46 |
 Flaaffy (#17) #17/30HGSS Trainer Kit: Gyarados & Raichu · Normal · 2010 | $1.09 | — | — |
 Flaaffy #42/181SM - Team Up · Reverse Holofoil · 2019 | $0.94 | $13.85 | $36.42 |
 Flaaffy #77/214SM - Lost Thunder · Reverse Holofoil · 2018 | $0.81 | $15.56 | $39.32 |
 Flaaffy #055/203Prize Pack Series Cards · Holofoil · 2022 | $0.72 | — | — |
| Flaaffy #43/95Call of Legends · Normal · 2011 | $0.72 | $26.37 | $38.55 |
 Flaaffy - Pikachu 53 #108Battle Academy 2024 · Normal · 2024 | $0.66 | — | — |
 Flaaffy #39/114XY - Steam Siege · Reverse Holofoil · 2016 | $0.65 | $13.93 | $37.15 |
 Flaaffy - Pikachu 37 #108Battle Academy 2024 · Normal · 2024 | $0.61 | — | — |
| Flaaffy #39/124Dragons Exalted · Normal · 2012 | $0.56 | $16.87 | $45.45 |
| Flaaffy #055/203Prize Pack Series Cards · Normal · 2022 | $0.47 | — | — |
 Flaaffy #056/189Darkness Ablaze · Reverse Holofoil · 2020 | $0.42 | $9.00 | $19.74 |
| Flaaffy #42/181SM - Team Up · Normal · 2019 | $0.42 | $13.45 | $35.76 |
 Flaaffy #055/203Evolving Skies · Reverse Holofoil · 2021 | $0.40 | $11.63 | $32.87 |
 Flaaffy - 9/15 #009/015McDonald's Promos 2022 · Normal · 2022 | $0.34 | — | — |
| Flaaffy #77/214SM - Lost Thunder · Normal · 2018 | $0.33 | $12.97 | $34.98 |
 Flaaffy #048/198Chilling Reign · Reverse Holofoil · 2021 | $0.31 | $12.75 | $34.78 |
| Flaaffy #056/189Darkness Ablaze · Normal · 2020 | $0.31 | $13.00 | $35.04 |
| Flaaffy #39/114XY - Steam Siege · Normal · 2016 | $0.29 | $12.15 | $33.91 |
 Flaaffy #028/086Chaos Rising · Reverse Holofoil · 2026 | $0.26 | $11.75 | $36.34 |
| Flaaffy #055/203Evolving Skies · Normal · 2021 | $0.26 | — | — |
 Flaaffy #067/198Scarlet & Violet Base Set · Reverse Holofoil · 2023 | $0.25 | — | — |
 Team Rocket's Flaaffy #073/182Destined Rivals · Reverse Holofoil · 2025 | $0.23 | $6.13 | $33.04 |
| Team Rocket's Flaaffy #073/182Destined Rivals · Normal · 2025 | $0.17 | $10.49 | $59.41 |
| Flaaffy #067/198Scarlet & Violet Base Set · Normal · 2023 | $0.17 | $10.39 | $30.80 |
| Flaaffy #048/198Chilling Reign · Normal · 2021 | $0.15 | $10.50 | $30.86 |
| Flaaffy #028/086Chaos Rising · Normal · 2026 | $0.11 | $10.54 | $31.97 |