“Shark Tank” star Robert Herjavec still remembers his first big splurge after becoming rich.

It was shortly after he sold his computer company BRAK Systems to AT&T Canada in 2000. Herjavec bought himself a $6 million plane.

“Now, it sounds really fancy…but if we go back in time it was this tiny little airplane,” Herjavec tells CNBC Make It. “It had a propeller and only one engine, but I thought it was the biggest jet in the world.