Chansey is card #113 of 165 in 151 (2023), a Rare illustrated by Taiga Kayama. At about $0.35 it is the #118 most valuable card in the set. In a 151 booster it turns up about once every 35 packs. It is one of 25 Chansey cards printed so far.
1999Base Set
2003Ruby & Sapphire
2005Unseen Forces
2010HeartGold & SoulSilver
2014Phantom Forces
2018Lost Thunder
2021Fusion Strike
2023151

















An ungraded Chansey from 151 sells for about $0.35. A PSA 10 is worth more, roughly $1.22 by our estimate, and a PSA 9 around $0.70.
It is a Rare, and it shows up about once every 35 151 packs.
Taiga Kayama drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open 151 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.