Hyper-v recovery manager in Azure has been in beta for a while now and has just gone to GA. The cost is per VM protected per month.
Orchestrate protection and recovery of private clouds
Windows Azure Hyper-V Recovery Manager can help you protect important services by coordinating the replication and recovery of System Center 2012 private clouds at a secondary location.
System Center 2012 Virtual Machine Manager clouds can be protected through automating the replication of the virtual machines that compose them at a secondary location. The ongoing asynchronous replication of each VM is provided by Windows Server 2012 Hyper-V Replica and is monitored and coordinated by Hyper-V Recovery Manager.
Continuous Health Monitoring
Hyper-V Recovery Manager monitors the state of Virtual Machine Manage clouds continuously and remotely from Windows Azure.
Can automate the recovery of your datacenter to a secondary location.
Cost: Is per VM protected per month.