Never pay anyone to perform a spell for you! Most people who ask you for an outrageous amount of money for spells are nothing more than bottom feeding wastes of flesh... oh, and they're con artists to boot!
Try using the easy-to-do spell we wrote for Merlin from Camelot.
Your ex-girlfriend is an ex for a reason. Perhaps you should REALLY think about WHY the spells you perform aren't working. Maybe it's time to move on and find a new girlfriend.