This game is $35.
It adds HD graphics (it is pretty), controller support and windowed mode. That is all, at least that I've seen.
The DLC for this game is $25. It consists solely of costumes you will never use and are inferior to the base-game armors.

I've had the game lock up on me several times, unable to progress until I loaded a previous save from about an hour ago. You cannot save in the middle of missions. Good luck!

Fable: The Lost Chapters is available for $10 and includes all of the same content minus the DLCs and the aforementioned additions. Unless your hobbies include frivolous spending and frustration regarding games not working correctly, you should save your money.