How much would it cost to have a handyman or contractor install one wall of drywall?

We want to make our dining room in our apartment into a bedroom, and thought building drywall might be a good answer. The ceiling is 9' high and the wall would be 13' feet. We'd probably have to have space for a door or something put into the dry wall also. One handyman said he does that stuff for $25/hour, but I was wondering how much everything would cost, from paying for the drywall, anything else he would charge us for (nails?/other stuff?). I know you guys can't give an exact number obviously, but kind of like a ballpark range?