1. Many society puts arbitrary clause of transfer charge of certain large amount of money which is other wise not prescribed by law.
2.On purchase of a society flat you are obliged to pay only the statutory fees and not any charge which the society whimsically imposes as in your case.
3.So you have every right to remove such clasue from the sale agreement.
4.Now if the spciety harases you while issuing share certificate then you can lodge complaint with the Registrar of the society.