Vaporeon is card #41 of 90 in HS—Undaunted (2010), a Uncommon illustrated by sui. At about $30.05 it is the #27 most valuable card in the set. In a HS—Undaunted booster it turns up about once every 8 packs. It is one of 38 Vaporeon cards printed so far.
1999Jungle
2003Skyridge
2007Power Keepers
2010HS—Undaunted
2013Plasma Freeze
2017SM Black Star Promos
2021Evolving Skies
2025Prismatic Evolutions

















See the full HS—Undaunted card list
An ungraded Vaporeon from HS—Undaunted sells for about $30.05. A PSA 10 is worth more, roughly $240 by our estimate, and a PSA 9 around $84.14.
It is a Uncommon, and it shows up about once every 8 HS—Undaunted packs.
sui drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open HS—Undaunted 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.