Four friends Ashok, Bashir, Chirag and deepak are out shopping. Ashok has less money than three times the amount that Bashir has. Chirag has more money than Bashir. Deepak has an amount equal to the difference of amount with Bashir and Chirag. Ashok has three times the money with Deepak. Each of them have to buy at least one shirt, or one shawl, or one sweater, or one jacket that are priced Rs.200, Rs.400, Rs.600, and Rs.1000 a piece, respectively. Chirag borrows Rs.300 from Ashok and buys the jacket. Bashir buys the sweater after borrowing Rs.100 from Ashok and is left with no money. Ashok buys three shirts.
What is the costliest item that Deepak could buy with his own money?
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