1.   Operators in the black market offer higher rates than banks for U.S. and British currencies but charge a hefty commission for converting Indian rupees.

2.   Operators in the black market typically offer higher rates than banks for U.S. and British currencies but charge a hefty commission for converting Indian rupees into those currencies.

3.   Operators in the black market typically offer higher rates than banks for U.S. and British currencies, but charge a hefty commission for converting Indian rupees into those currencies.

4.   Operators in the black market offer higher rates than banks for U.S. and British currencies but charge a hefty commission for converting Indian rupees into those monies.