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general::
Phrase(s): throw something into the bargain [and] include something in the bargain; throw something in
to include something extra in a deal. • To encourage me to buy a new car, the car dealer threw a free radio into the bargain. • If you purchase three pounds of chocolates, I’ll throw one pound of salted nuts into the bargain. • She threw in a free calendar.
McGrawhill's American Idioms And Phrasal Verbs