Bargain store needs public permit (6)
I believe the answer is:
outlet
'bargain store' is the definition.
'outlet' can be an answer for 'store' (I've seen this before). I am unsure of the 'bargain' bit.
'public permit' is the wordplay.
'public' becomes 'out' (out can mean released to the public).
'permit' becomes 'let' (synonyms).
'out'+'let'='OUTLET'
'needs' acts as a link.
Can you help me to learn more?
(Other definitions for outlet that I've seen before include "Place of business for retailing goods" , "River mouth; socket" , "Exit pipe" , "Means of release" , "Store" .)