I would've called this a morality play, but the main character had no morals.  As many others have said, don't make deals with the devil (or his associates).  I have only heard two tales where someone got the better of the devil - The Devil Went Down to Georgia (I always liked this song) and a story I heard recently called The Hell Train (I think that was it).

Overall it was an okay episode, but difficult to sympathize with any of the characters.