Zerto Pricing Example (15 VMs)
…the Zerto Cloud Appliance (ZCA) must be installed and powered on in an AWS M3.xlarge EC2 instance at all times. This means you’re spending $2300 per Zerto instance, per year. When you add that to the already expensive licensing cost which is minimum of 15 VMs at $1000 per year or $15,000 you get $17,300.
Excerpt from Unitrends blog