Assortment: possibly it’s cheap (8)
I believe the answer is:
pastiche
'assortment' is the definition.
(thesaurus)
'possibly it's cheap' is the wordplay.
'possibly' is an anagram indicator.
'its'+'cheap'='itscheap'
'itscheap' anagrammed gives 'PASTICHE'.
(Other definitions for pastiche that I've seen before include "Work of art that imitates the style of a previous work" , "Work of mixed styles" , "Patches I apply to composition drawn from various sources" , "Imitative artistic work" , "Artistic work that imitates another" .)