Dear Concerned,
No the information provided to yourself is not correct the gift deed to any family member is 0.5% stamp duty at the value of the property for more information and clarification kindly visit
http://www.wbregistration.gov.in/(S(10owpl3tboeyj0znkzvkni4j))/Stamp_duty.aspx
the above link gives you information of the stamp duty charged in West Bengal on property transactions.
Best of Luck