VMware is still pushing their adoption of the VCA Certifications. You can use the voucher below to get 50% discount. The code will be valid until January 31st.
Voucher: VMRT6B404C7B
You have three VCA Certifications to choose from. The voucher is valid for all three.
VCA-Cloud (Cloud) sign up: http://mylearn.vmware.com/quiz.cfm?item=47439
VCA-DCV (Datacenter) sign up: http://mylearn.vmware.com/quiz.cfm?item=47428
VCA-WM (Workforce Mobility) sign up: http://mylearn.vmware.com/quiz.cfm?item=47438
The VCA Certification can be taken online from anywhere. All you need is internet and a browser.