Bargain: found one in smart sale at the finish (9)

I believe the answer is:

negotiate

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'bargain' is the definition.
(I've seen this in another clue)

I can't explain the rest of the clue.

(Other definitions for negotiate that I've seen before include "Find a way over (a difficult path)" , "I get a note (anag) - bargain" , "Deal, bargain" , "Pass round" , "Discuss the terms of an arrangement" .)

I've seen this clue in The Telegraph.

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