You should avoid to buy SBI credit card, I am SBI credit card customer from 2 -3 years, they change there policy Rewards and card point calculation frequently and never meet promise which they ensure while taking card .
Ex: I have purchased SBI BPCL card for petrol reward point, rather than reward they charge 26 rs extra on each transaction, in initial 2 statement I have found this extra amount getting revert, but after two month extra amount stop reversal, and reward which ihave received for using BPCL petrol card is much lesser than surcharge chargess.
So be aware for fraud Credit card company like SBI Credit card .