As you want here I am telling for new gas connection price in Bharat Petroleum Corporation Limited (BPCL) , so here is require info:

For New connection
Deposit for 1 cylinder @ 1450/- per cylinder. 1450.00
Deposit for 2 cylinders @ 1450/- per cylinder. 2900.00
Deposit for pressure regulator 150.00
Stamp duty applicable only in state of Maharashtra and Gujarat. 100.00
Inspection of hotplate at the time of release of connection if hotplate is not purchased from distributor 250.00
Installation /Demonstration charge for new connection 50.00
Administrative charges for issuance of DGCC including cost of DGCC. 50.00
Suraksha LPG hose (1.5 meter) 190.00
Cost of gas for 1 or 2 cylinders as applicable Rate as applicable for the market.

Additional cylinder
Deposit for 1 cylinder @ 1450/- per cylinder. 1450.00
Stamp duty applicable only in state of Maharashtra and Gujarat. 100.00
Administrative charges for release for additional cylinder 50.00
Cost of gas for 1 cylinder Rate as applicable for the market.

Name change/regularization of connection
Stamp duty applicable only in the state of Maharashtra and Gujarat per subscription voucher 100.00
Administrative charges for issuance of DGCC including cost of DGCC (only if issued to consumer). 50.00

Contact address
LPG Headquarters
Address
LPG Business Unit
Bharat Petroleum Corporation Limited,
Bharat Bhavan II,
5th Floor4 & 6 Currimbhoy Road, Ballard Estate,
Mumbai - 400001
Telephone
022 22714516 / 022 22714508
Fax: 022 22713815