The most valuable POP Series 3 card is Ho-Oh ex #17, worth about $279.99 in Near Mint condition, followed by Blastoise #1 at $217.50 and Pichu Bros. #16 at $124.38. These are raw (ungraded) market prices from recent sales, updated daily. Graded copies sell for more; each card's page has its PSA, CGC and BGS prices.