what is the reaction to the deal Faust makes with Mephisto?

Well, from what I've read, any deal with the devil does not turn out well....for the person. Faust initially sells his soul for eternal knowledge. He ends up on a fun filled package tour full of various worldly pleasures. Now in Goeth's version, Faust is saved by God's grace and pleadings from a young girl Faust destroyed (Gretchen). In older versions, Faust is carted streight to hell. In any case, I have heard, deals with any sort of devil are not advisable. God might be busy or just not like you and then you are really in trouble!