Stamp duty on Buildings now 900 per Sq/ft

From now on if u buy a Flat or land you will have to shell Rs.900 per Sq/feet as Stamp duty to the government. This come s to 11% almost.
Earlier the rate was Rs.440 per Sq/feet. A 100% increase is done only with a view to increase the goverenmenrtts revenue. What a way to do it?????