Treecko is card #90 of 106 in Great Encounters (2008), a Common illustrated by Kouki Saitou. At about $25.99 it is the #19 most valuable card in the set. In a Great Encounters booster it turns up about once every 8 packs. It is one of 23 Treecko cards printed so far.
2003Ruby & Sapphire
2004Team Rocket Returns
2006Crystal Guardians
2008Great Encounters
2009Arceus
2013Plasma Freeze
2018Lost Thunder
2021McDonald's Collection 2021

















See the full Great Encounters card list
An ungraded Treecko from Great Encounters sells for about $25.99. A PSA 10 is worth more, roughly $208 by our estimate, and a PSA 9 around $72.77.
It is a Common, and it shows up about once every 8 Great Encounters packs.
Kouki Saitou drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Great Encounters booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.