Best teacher for costing.

This is a million dollar question because one thing i have noticed that for costing their are lots of fake promotion going on just to promote faculty..
i would suggest to take classes from the city in which you belongs if the coaching classes for costing is good enough..
have a talk with your friends to finft out review's..

never take suggestion from any of such platforms (i.e, CCI, FINAPP OR even QUORA) becat lots of fake reviews have been provided with fake IDs..

better watch you tube lecture before taking any call

Depends how much are you ready to spend