When it comes to luxury spending, billionaire Mark Cuban draws the line at yachts, butlers and house cleaning services. "I just try to be the same person, I mean, as I was when I was poor, middle and rich," Cuban, 65, told "The Really Good Podcast" on Thursday. Cuban, a serial entrepreneur and startup investor, has a net worth of $5.1 billion, according to Forbes. Rather, Cuban's decision to not pay for certain services is less about frugality and more about his desire for a private life. Still, Cuban wants to remain the same person he was when he was "broke," he said on the podcast.

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