Many factors play here.
1. It depends on your lawyer, his experience, place etc Usually it will around 15 to 20k for filing petition for rcr or divorce. Also same holds good for filing objection. This rate is usually by experienced lawyers with 10+ years of experience and in cities like delhi, hyderabad, bangalore etc. Other districts - usually lesser than that.
2. Usually per hearing rate varies from Rs. 250 to 2000 depending on lawyers. Some take more than this too.
Cost of divorce wont stop here my dear friend. If you file petition, your wife for sure will ask HC to transfer case to her place. You might have to defend and keep case in bangalore only. For that again you have to shell out money. Since law is totally baised for women, most probably case will be easily transferrable to her place. Again you have to shell out more money for travelling to her place, engaging new lawyer in that place, or taking your lawyer to that place(more money here )
If you file divorce, be prepared to get other cases like rcr, 498a, dv, dp 406 etc on you and your family member. again there will be cost for AB(around 25k per person) then regular bail( if it is cash, you hav to provide cash bail for each person - may be around 50k per person), filing objectioon, going everytime to court along with all accused. Ooops!!!!!!.
On the top of these, there will lot of other expenditures like detective agencie's cost for finding out truth about wife, getting evidences etc.
May be if you have any medical related issues mentioned in your petititon or her objection, then you people many need to go for medical check up which might go up to dna testing. Again you will loose around 50k+ here.
Buzzzzz!!!!! Your wife will surely ask for stridan (all gold items you gifted also included here along with marriage expenditure, dowry taken if exists etc etc), compensation (hefty one- which you cant afford), also she might ask her legal expenditures.
The way is still long .... You might need to give money to clerks at court for getting good dates, copies etc etc....
This is the picture i have for now. I might have missed out some costs. Might be senior lawyers can help. I just tried to cover where all the cost will come for divorce case. I am not able to give right picture/exact numbers here but as per my opinion with all these mentioned things above, it usually costs around 5 to 10 lakhs for completely coming out of divorce case in the cities like bangalore with good advocate having 1o or 15+ years experience.
Hope this might help you. Keep posting regarding this as many people usually ask this question. It will be helpful so that they can manage money.