A lone comic, terribly cheap (10)
I believe the answer is:
economical
'cheap' is the definition.
(I've seen this before)
'a lone comic terribly' is the wordplay.
'terribly' indicates an anagram.
'a'+'lone'+'comic'='alonecomic'
'alonecomic' anagrammed gives 'ECONOMICAL'.
(Other definitions for economical that I've seen before include "Inexpensive" , "Thrifty" , "Using little" , "Cheap" , "saving money" .)