Crossword Genius

Contracted next trade into the bargain (5)

Ross

I believe the answer is:

extra

I'm a little stuck... Click here to teach me more about this clue!

'into the bargain' is the definition.
(thesaurus)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for extra that I've seen before include "Cricket run; unusually" , "no ball perhaps" , "Additional - bye" , "(Theatrical) spear carrier" , "Unnecessary" .)

I've seen this clue in the Sydney Morning Herald.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.