Accounts for one being in shops (7)
I believe the answer is:
stories
'accounts' is the definition.
(I know this)
'one being in shops' is the wordplay.
'one' becomes 'i' (Roman numeral).
'being in' indicates putting letters inside.
'shops' becomes 'stores' ('store' can be a synonym of 'shop').
'i' placed within 'stores' is 'STORIES'.
'for' acts as a link.
(Other definitions for stories that I've seen before include "See 12" , "See 21" , "Lies" , "House sections" , "Floors" .)