Porygon

Porygon (103b/147), the Common from Aquapolis, has an estimated ungraded market price of about $8.25, typically in the $7–$10 range. Note: 19 other cards named Porygon exist across the sets Riffle tracks, at very different values; check the collector number.

This page covers Porygon (103b/147), the Common (about $7–$10) from Aquapolis.

The other versions: #103a/147 from Aquapolis (Common, about $7–$9); #47/112 from FireRed & LeafGreen (Uncommon, about $7–$9); #48/82 from Team Rocket (Uncommon, about $2–$4); #39/102 from Base Set (Uncommon, about $2–$3); #78/105 from Neo Destiny (Common, about $2–$3); #69/115 from Unseen Forces (Common, about under $1); #80/113 from Delta Species (Common, about under $1); #81/106 from Great Encounters (Common, about under $1); #72/101 from Plasma Blast (Common, about under $1); #73/102 from Triumphant (Common, about under $1); #155/214 from Unbroken Bonds (Common, about under $1); #71/108 from Evolutions (Uncommon, about under $1); #154/214 from Unbroken Bonds (Common, about under $1); #64/98 from Ancient Origins (Common, about under $1); #103/147 from Burning Shadows (Common, about under $1); #140/196 from Lost Origin (Common, about under $1); #116/198 from Chilling Reign (Common, about under $1); #142/182 from Paradox Rift (Common, about under $1); #137/165 from 151 (Common, about under $1).

The collector number printed at the bottom of the card is the reliable way to tell them apart.

Porygon (103b/147) is a Common. PSA has graded 71 copies to date, so graded supply is measurable and growing.

Of the 71 copies PSA has graded, 38% earned a PSA 10. That's a low gem rate, so flawless copies are genuinely hard to come by. Grade-by-grade population and pop-over-time appear with Riffle premium.