Something that is a bargain is good value, usually because it has been sold at a lower price than normal.

A bargain is an agreement, especially a formal business agreement, in which two people or groups agree what each of them will do, pay, or receive.

If you have not bargained for or bargained on something that happens, you did not expect it to happen and so feel surprised or worried by it.

You use into the bargain or in the bargain when mentioning an additional quantity, feature, fact, or action, to emphasize the fact that it is also involved.

When people bargain with each other, they discuss what each of them will do, pay, or receive.