How much is Oprah Winfrey's yacht?

I'm curious, could you possibly shed some light on the value of Oprah Winfrey's yacht? It's a topic that's piqued my interest, and I'm eager to learn more about the lavish lifestyle of such a successful individual. I understand that the specifics may vary, but perhaps you have some insight into the approximate worth of her yacht, or the factors that contribute to its value.