Entei

Entei (20/163), the Holo Rare from Battle Styles, has an estimated ungraded market price of about under $1. Note: 15 other cards named Entei exist across the sets Riffle tracks, at very different values; check the collector number.

This page covers Entei (20/163), the Holo Rare (about under $1) from Battle Styles.

The other versions: #6/64 from Neo Revelation (Rare, about $440–$560); #H08/147 from Aquapolis (Rare, about $125–$165); #10/147 from Aquapolis (Rare, about $80–$110); #SL3/95 from Call of Legends (Rare Holo, about $70–$90); #17/64 from Neo Revelation (Rare, about $55–$80); #4/132 from Secret Wonders (Rare Holo, about $35–$45); #112/91 from Paldean Fates (Shiny rare, about $10–$14); #15/98 from Ancient Origins (Rare, about $10–$13); #14/98 from Ancient Origins (Rare, about $3–$4); #47/214 from Lost Thunder (Rare, about $2–$3); #28/236 from Cosmic Eclipse (Rare, about $0.80–$1); #021/159 from Crown Zenith (Holo Rare, about under $1); #19/203 from Evolving Skies (Holo Rare, about under $1); #030/197 from Obsidian Flames (Rare, about under $1); #025/217 from Ascended Heroes (Rare, about under $1).

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