"The Official Pokemon Trading Card Game Player's Guide" (herein now referenced as the Guide) published by Nintendo USA in May 2009 sells in retail and on-line stores for approximately $9.99 (US)
Plenty of goblin decks care about the number of goblins you have out, especially ones built around Krenko, Mob Boss or Muxus, Goblin Grandee
Card prices reflect the average retail price of the cards displayed in the TCG Player Store
That'd be radical enough to want this card for a collection then there's the other Professor's Research, a full-art card and one of two "Rare Ultra" cards in the set
The road to this strange moment began around 12,000 years ago, when humans gave up their nomadic lifestyles and first began to collect items they deemed significant, but it really kicked off in 1976, when a professor of statistics from Bowling Green University named James Beckett III noticed that the baseball trading card market was a Wild West of price fluctuation