Serialized cards display their individual number (like 077/250), which directly shows rarity and is a major driver of value in modern premium sets
If you're just interested in owning this card in the unlimited edition, you can pick up a damaged copy for $80, but setting your sights on a first edition copy will cost upwards of $400 if you find one in better than LP condition, though more sales data is needed to determine the exact amount
Typically these are used to build a deck with, and you add basic cards in to support the EX
8- Monkey.D.Luffy (Super Pre-Release) [Winner] $1,170 The Monkey D
What makes this card really special is the combination of "Worlds 04" stamp on the bottom right of the artwork, and "STAFF" printed across the bottom
This almost immediately eliminates most second-hand marketplaces like Amazon and eBay, which offer little in the way of protection or reputation to assist you in buying Japanese Pokmon cards