Updated as of December 5, 2013: “Due to the overwhelming popularity of the program, the previously available free VCA exam offer is no longer available as we have exceeded our maximum offers available for this promotion. However, you can still use code VMRT1B01791B for a 50% discount on the VCA exam. If you have specific questions, please email email@example.com .”
You can take the VCA exam for 50% off by using this voucher: VMRT1B01791B
It’s good until the end of January 31, 2014.
You can find more information about the VCA certifications here: http://www.vmware.com/certification