1 According to Livestrong.com, the cost of getting a Zumba certification ranges from $225 to $285. 2  After becoming certified, you will need to enroll in the Zumba Instructor Network for a monthly fee. An article at the Houston Chronicle states that Zumba certification classes require interested individuals to register at the Zumba website and complete the one-day training to receive a certificate of completion. 2  The cost of training classes range from $225 to $285.