Novel run on cheap paper (9)
I believe the answer is:
newsprint
'cheap paper' is the definition.
(I've seen this before)
'novel run on' is the wordplay.
'novel' becomes 'new' (synonyms).
'run' becomes 'sprint' (sprint is a kind of run).
'on' says to put letters next to each other.
'new'+'sprint'='NEWSPRINT'
(Other definitions for newsprint that I've seen before include "Material for publication" , "Paper for dailies" , "sports pages and much else" , "Print news on this kind of paper - what else?" , "Bearer of tidings" .)