Looks about right to me. Of course, it would be a lot cheaper if you bought the individual components and put it together yourself ;). Meanwhile, you can canibalize what's still good from your old computer like the RAM and stuff and save even more ;). Anything wrong with your old power supply? Keep it. Same goes with fans. You can reuse those. As long as they are in good shape, there's no reason why you couldn't use them and save yourself some cash ;).

Laurie