Good news is that Microsoft is now offering free exam vouchers for the new exam “74-409 Server Virtualization with Windows Server Hyper-V and System Center” . The amount of free exams is limited, so be sure to register it as soon as possible.
The number of free exams is limited, so be sure to schedule your appointment to lock-in your free exam. Vouchers expire and all exams must be taken by June 30, 2014. To register for your exam, go to http://www.register.prometric.com and, when prompted, use your voucher code to schedule your exam.
I have scheduled an exam for myself in Prometric for next month for complete free.