Conc. basement floor, want to repair and lay carpet down, cost?

I'm about to buy a duplex. The basement has an uneven concrete floor. would like to even it out, and lay down a nice, plush carpet. may use it as a bedroom. would like to find out how much i'm going to spend? The space is only 10 feet by 16 feet wide. how much is the concrete going to be? laying the carpet? and work? and how long would something like this take. HELP!