 Dialga EX (122 Secret Rare) #122/119XY - Phantom Forces · Holofoil · 2014 | $1,047 | $6,190 | $70,000 |
 Arceus & Dialga & Palkia GX (Alternate Full Art) #221/236SM - Cosmic Eclipse · Holofoil · 2019 | $582 | $850 | $3,925 |
 Dialga EX (Team Plasma) (99 Full Art) #99/101Plasma Blast · Holofoil · 2013 | $462 | $3,050 | $25,000 |
 Dialga (Shiny) #SL2Call of Legends · Holofoil · 2011 | $326 | — | — |
 Dialga G LV.X #122/127Platinum · Holofoil · 2009 | $319 | $987 | $8,000 |
 Palkia & Dialga Legends - 101/102 + 102/102 (Single Oversized Promo) #101/102 + 102/102Jumbo Cards · Holofoil · 2015 | $300 | — | — |
 Dialga LV.X #DP17Diamond and Pearl Promos · Holofoil · 2007 | $275 | — | — |
 Dialga LV.X #105/106Great Encounters · Holofoil · 2008 | $200 | — | — |
 Palkia & Dialga Legend (Bottom) #102/102Triumphant · Holofoil · 2010 | $178 | — | — |
 Palkia & Dialga Legend (Top) #101/102Triumphant · Holofoil · 2010 | $139 | $775 | $6,311 |
 Origin Forme Dialga VSTAR (Secret) #GG68/GG70Crown Zenith: Galarian Gallery · Holofoil · 2023 | $118 | $103 | $267 |
 Arceus & Dialga & Palkia GX (Secret) #258/236SM - Cosmic Eclipse · Holofoil · 2019 | $104 | $125 | $603 |
 Dialga GX (Secret) #138/131SM - Forbidden Light · Holofoil · 2018 | $78.96 | — | — |
 Arceus & Dialga & Palkia GX (Full Art) #220/236SM - Cosmic Eclipse · Holofoil · 2019 | $62.30 | $77.00 | $546 |
 Origin Forme Dialga V (Alternate Full Art) #177/189Astral Radiance · Holofoil · 2022 | $60.81 | $66.00 | $184 |
 Dialga (Full Art Promo) #XY77XY Promos · Holofoil · 2013 | $59.59 | — | — |
 Dialga LV.X #DP37Diamond and Pearl Promos · Holofoil · 2007 | $54.44 | — | — |
 Dialga #4/100Majestic Dawn · Holofoil · 2008 | $50.19 | $330 | $888 |
 Dialga GX (Secret Rare) #164/156SM - Ultra Prism · Holofoil · 2018 | $46.30 | $100 | $781 |
 Dialga #1/130Diamond and Pearl · Holofoil · 2007 | $44.80 | — | — |
 Dialga EX (Team Plasma) #65/101Plasma Blast · Holofoil · 2013 | $39.60 | $50.00 | $258 |
 Dialga #3/95Call of Legends · Holofoil · 2011 | $38.50 | — | — |
| Dialga #4/100Majestic Dawn · Reverse Holofoil · 2008 | $37.01 | $271 | $643 |
 Dialga GX (Full Art) #125/131SM - Forbidden Light · Holofoil · 2018 | $34.90 | — | — |
 Dialga #DP49Diamond and Pearl Promos · Holofoil · 2007 | $34.31 | $390 | $4,409 |
 Dialga - 16/106 (Cosmos Holo) #016/106Deck Exclusives · Holofoil · 2016 | $31.57 | — | — |
| Dialga #3/95Call of Legends · Reverse Holofoil · 2011 | $29.80 | — | — |
 Arceus & Dialga & Palkia GX #156/236SM - Cosmic Eclipse · Holofoil · 2019 | $29.47 | $50.73 | $253 |
 Dialga (6) #6/127Platinum · Holofoil · 2009 | $29.34 | — | — |
![Dialga - 16/106 [Platinum] #016/106](/ci/t/155604_200w.jpg) Dialga - 16/106 [Platinum] #016/106Burger King Promos · Reverse Holofoil · 2026 | $29.09 | — | — |
 Dialga #DP26Diamond and Pearl Promos · Holofoil · 2007 | $29.00 | — | — |
 Dialga (5) #5/127Platinum · Holofoil · 2009 | $26.60 | — | — |
| Dialga #1/130Diamond and Pearl · Reverse Holofoil · 2007 | $25.14 | — | — |
| Dialga (6) #6/127Platinum · Reverse Holofoil · 2009 | $22.65 | $108 | $127 |
 Dialga G #7/127Platinum · Holofoil · 2009 | $22.20 | — | — |
 Dialga GX (Full Art) #146/156SM - Ultra Prism · Holofoil · 2018 | $21.23 | $76.99 | $382 |
 Dialga - DP26 (DP Black Star Promo) #DP26Jumbo Cards · Holofoil · 2015 | $20.90 | — | — |
 Dialga (23) #23/127Platinum · Reverse Holofoil · 2009 | $18.74 | — | — |
| Dialga (5) #5/127Platinum · Reverse Holofoil · 2009 | $17.35 | $81.00 | $555 |
 Origin Forme Dialga VSTAR - 198/189 (Secret) #198/189Astral Radiance · Holofoil · 2022 | $16.47 | $39.00 | $71.95 |
| Dialga G #7/127Platinum · Reverse Holofoil · 2009 | $15.57 | — | — |
 Dialga G - 2009 (Tsubasa Nakamura) #7/127World Championship Decks · Normal · 2018 | $15.41 | — | — |
 Dialga (Japanese 11th Movie Commemoration Set) #008/009Miscellaneous Cards & Products · Holofoil · 2026 | $14.99 | — | — |
 Dialga G LV.X - 2009 (Tsubasa Nakamura) #122/127World Championship Decks · Normal · 2018 | $14.19 | — | — |
 Origin Forme Dialga VSTAR - 210/189 (Secret) #210/189Astral Radiance · Holofoil · 2022 | $13.86 | $25.00 | $88.73 |
 Dialga G LV.X - 2010 (Yuta Komatsuda) #122/127World Championship Decks · Normal · 2018 | $13.36 | — | — |
 Dialga G - 7/127 (League Promo) #007/127League & Championship Cards · Reverse Holofoil · 2016 | $12.70 | — | — |
 Dialga EX #62/119XY - Phantom Forces · Holofoil · 2014 | $11.78 | — | — |
 Dialga GX #100/156SM - Ultra Prism · Holofoil · 2018 | $11.40 | $45.00 | $216 |
 Dialga #16/106Great Encounters · Reverse Holofoil · 2008 | $8.93 | — | — |
 Origin Forme Dialga VSTAR #114/189Prize Pack Series Cards · Holofoil · 2022 | $8.80 | — | — |
 Dialga GX #82/131SM - Forbidden Light · Holofoil · 2018 | $8.41 | $52.50 | $138 |
 Origin Forme Dialga V #113/189Prize Pack Series Cards · Holofoil · 2022 | $5.88 | — | — |
 Dialga G - 2010 (Yuta Komatsuda) #7/127World Championship Decks · Normal · 2018 | $4.99 | — | — |
 Dialga #112/203Prize Pack Series Cards · Normal · 2022 | $4.04 | — | — |
 Origin Forme Dialga VSTAR #SWSH256Jumbo Cards · Holofoil · 2015 | $3.47 | — | — |
 Origin Forme Dialga V #SWSH255Sword & Shield Promo Cards · Holofoil · 2019 | $3.39 | — | — |
| Dialga (23) #23/127Platinum · Normal · 2009 | $3.09 | — | — |
| Dialga #16/106Great Encounters · Normal · 2008 | $2.97 | — | — |
 Dialga #127/214SM - Lost Thunder · Holofoil · 2018 | $2.06 | — | — |
 Origin Forme Dialga VSTAR #SWSH256Sword & Shield Promo Cards · Holofoil · 2019 | $2.02 | — | — |
 Origin Forme Dialga VSTAR #114/189Astral Radiance · Holofoil · 2022 | $1.92 | — | — |
 Origin Forme Dialga V #113/189Astral Radiance · Holofoil · 2022 | $1.35 | — | — |
| Dialga #127/214SM - Lost Thunder · Reverse Holofoil · 2018 | $1.29 | $31.00 | $42.17 |
 Dialga ex #180Scarlet & Violet Promo Cards · Holofoil · 2023 | $0.74 | $9.00 | $35.33 |
 Dialga - 112/203 (Cosmos Holo) #112/203Miscellaneous Cards & Products · Holofoil · 2026 | $0.67 | — | — |
 Dialga #121/185Vivid Voltage · Reverse Holofoil · 2020 | $0.41 | — | — |
| Dialga #121/185Vivid Voltage · Holofoil · 2020 | $0.33 | — | — |
 Dialga #135/191Surging Sparks · Reverse Holofoil · 2024 | $0.27 | $17.69 | $36.11 |
 Dialga #112/203Evolving Skies · Reverse Holofoil · 2021 | $0.26 | $7.60 | $32.34 |
 Dialga #121/185Deck Exclusives · Normal · 2016 | $0.26 | — | — |
 Dialga #095/132Mega Evolution · Reverse Holofoil · 2025 | $0.23 | $11.08 | $32.00 |
 Dialga #020/025Celebrations · Holofoil · 2021 | $0.23 | — | — |
| Dialga #112/203Evolving Skies · Holofoil · 2021 | $0.23 | — | — |
| Dialga #135/191Surging Sparks · Holofoil · 2024 | $0.17 | — | — |
 Dialga #103/12830th Celebration · Holofoil · 2026 | $0.15 | $11.87 | $37.08 |
| Dialga #095/132Mega Evolution · Holofoil · 2025 | $0.15 | $11.47 | $32.50 |