Work out price of a pound of ribs (6)
I believe the answer is:
costal
'of ribs' is the definition.
('costal' means relating to ribs)
'work out price of a pound' is the wordplay.
'work out price of' becomes 'cost' (as in costing a job).
'pound' becomes 'L' (the pound sign is based on an L).
'cost'+'a'+'l'='COSTAL'
(Other definitions for costal that I've seen before include "Relating to a rib" , "Of the ribs" .)