Between the costs of travel, accommodations, and meals, you could wind up paying more for extras than you do for entries to the tournaments. While the most prestigious tourneys in the world, like the World Series of Poker (WSOP) in Las Vegas, take place in brick-and-mortar casinos, it's impractical to play more than a few such events per year. Tournament poker gives every participant the opportunity to turn a modest investment into a massive payday.