Repository finding value in silence (6)
I believe the answer is:
museum
'repository' is the definition.
(I know that museum is a type of repository)
'value in silence' is the wordplay.
'value' becomes 'use' (Use is a type of value in economics).
'in' means one lot of letters goes inside another.
'silence' becomes 'mum' (as in 'mum's the word').
'use' put inside 'mum' is 'MUSEUM'.
'finding' is the link.
(Other definitions for museum that I've seen before include "Gallery of curiosities" , "Repository for objects of historical interest" , "Place for historical artefacts" , "Where items of interest may be seen or studied" , "Building accommodating historical items of interest" .)