Ralts is card #89 of 127 in Platinum (2009), a Common illustrated by Miki Tanaka. At about $10.66 it is the #61 most valuable card in the set. In a Platinum booster it turns up about once every 9 packs. It is one of 32 Ralts cards printed so far.
2003Ruby & Sapphire
2006Dragon Frontiers
2009Platinum
2013Legendary Treasures
2018Lost Thunder
2021Chilling Reign
2024Paldean Fates
2026Ascended Heroes

















See the full Platinum card list
An ungraded Ralts from Platinum sells for about $10.66. A PSA 10 is worth more, roughly $85.28 by our estimate, and a PSA 9 around $29.85.
It is a Common, and it shows up about once every 9 Platinum packs.
Miki Tanaka drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Platinum 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.