Elon Musk’s comments about his frugal spending habits have been widely publicized, including that he stays in friends’ spare rooms when working at Tesla’s Bay Area headquarters. Of course, Business Insider later uncovered that Musk did own a $7 million Austin, Texas, home at the time of these comments.

Still, the billionaire’s reputation for penny-pinching remains — with one exception.

Musk’s Private Jet Collection