Hi Swaprakash,
Welcome to VMware Communtiy,
The 50% offer that was there before has been withdrawn effective from Dec 1st 2013. You will only get a 50% off using the vouchers VMware provides.
Certified Associate Exams Promo
For 50% off you can try these vouchers. Better use them soon as i'm not sure when the vouchers will expire too.
VMRT7A7B839B
VMRT7B82033E
VMRT7A0D9F9B
VMRT6B404C7B
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Abhilash B
LinkedIn : https://www.linkedin.com/in/abhilashhb/