You bargained for your life and pain.
I bet that fox thought this old hen was more than he bargained for.
Where a man bargained and sold his land to another for pecuniary consideration, which might be merely nominal, and need not necessarily be actually paid, equity held the bargainor to be seised of the land to the use of the bargainee.
When I originally entered Tiyan, we bargained the terms of my stay.
Sometimes lucky parents get more than they bargained for and end up with a matching pair of twin newborns.