Jump in fare after auction ends early (7)
I believe the answer is:
salchow
'jump' is the definition.
(type of jump in figure skating)
'in fare after auction ends early' is the wordplay.
'in fare' becomes 'chow' (chow can informally mean food. I am not sure about the 'in' bit.).
'after' says to put letters next to each other.
'auction' becomes 'sale' (I've seen this before).
'ends early' means to remove the last letter (I've seen 'ending early' mean this).
'sale' with its final letter removed is 'sal'.
'chow' put after 'sal' is 'SALCHOW'.
(Other definitions for salchow that I've seen before include "Jump with spins on ice" , "twisting leap" .)