Dude! You're 3 1/2 years late to the discussion.
Most WGT players spend little if any money. They spend free credits they have earned in a variety of ways, credits they have won from other players or in tournaments.
Have you ever heard of the Peter Principal?
"People advance until they reach their level of incompetence."
Or put another way - "Anything that works will be used in progressively more challenging applications until it fails."