Approach current price (6)
I believe the answer is:
accost
'approach' is the definition.
(I know that approach is a more specific form of the action accost)
'current price?' is the wordplay.
'current' becomes 'ac' (alternating current).
'price?' becomes 'cost' (synonyms).
'ac'+'cost'='ACCOST'
(Other definitions for accost that I've seen before include "Come up and address" , "Challenge" , "Approach, stop and speak to" , "Approach boldly and speak to" , "Tackle" .)