Paper page merchant distributed (9)
I believe the answer is:
parchment
'paper' is the definition.
(parchment is a kind of paper)
'page merchant distributed' is the wordplay.
'page' becomes 'p'.
'distributed' indicates an anagram.
'merchant' with letters rearranged gives 'archment'.
'p'+'archment'='PARCHMENT'
(Other definitions for parchment that I've seen before include "Paper made from animal skin" , "Work on skin" , "diploma" , "High-quality paper" , "Old writing material" .)