i have taken his costing classes but i found it waste of time and money. his energy is so low during classes that you will feel bored. i could hardly complete 20 lectures. he made the subject so boring. i think you should look for some other teacher,
not at all recommended teacher he does not cover theory and case study part that good. he merely reads the text and expect you to understand just by simple reading. his theory and case study is too weak. never buy his classes
a big NO for his classes i did a mistake of taking sfm classes with him it was my bad decision. either go for sanjay saraf or mayank kothari sir. they are best for sfm