Phone Screen broken.. HELP

I broke my screen(cracked) when i was trying to hold it with my teeths teeth while driving.
Though the touch is working fine.
I think only the front screen is cracked. Please help me for it.
How much it will cost to repair.
I also saw a digitizer on ebay http://http://www.ebay.in/itm/white-...-/141023156755

Please suggest me. Is it the same thing my phone needs?