@ Ankit - No, there is none.
@ Srinivasa Rao - "Basing on the quality of your answer already ISC is giving cash credits to all answers. " This statement of yours is misleading. ISC does not give cash credit to all answers. Only a select few responses are awarded cash credits.
I do not think the number of Best Answers is taken into account while deciding on the Wizard and Star of the month. Your assumption is incorrect. Best Answers are generally selected by the thread initiator, editors might sometimes select a response as the Best Answer, which is rare. Only the quality of the posts and the regularity with which a member participates, in a section, is the deciding factor for such awards.
"A love affair with knowledge will never end in heartbreak." -Michael Garrett Marino
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease