It is annoying if you have the preview left on and this will move your object but you don't actually make any additional effort when you change the values by typing, don't you? When you have the selection tool and press Enter, the Move dialog appears with the Horizontal value selected and ready to be changed. You don't have to type 0 and then the desired value but just type the desired Horizontal value, press the Tab key on your keyboard to select the Vertical value and change it. Pressing Alt + p while using the Move dialog will toggle the preview so you can see the change before committing.
edit: Alternatively, instead of using the Move dialog, with your object selected regardless of the currently used tool in the properties bar at the top of the screen, click after the values in the x and y boxes and type + (plus key on your keyboard) followed by the desired value. And also in case you don't know, you can use the arrow keys on your keyboard to move objects with increments set in the general category of the preferences which are also increased by 10 when holding Shift key down when using the arrow keys.
