Hi Prakash,
Have you enquired with other institutes about the certification cost? I would think, this is very high.
Are they giving placement assurance in first place? Did you talk to SAP Certification India? If not, please check with them.
If you invest some money, then you need to get definitely job assurance from the institute, because if you see previous posts, there are many persons who got the certification but didn't get a job.
So, you have to take precautionary steps before take this choice of SAP certification.
Alternatively, you can connect with already known SAP guys who are working in SAP because they would get SAP fresher walk-in email in their inbox. Also, connect all HR's in linkedin portal and follow their company pages that would help you somewhere to get the job.
Regards
GGOPII