Book with twenty per cent off by journalist: good for the consumer! (6)
I believe the answer is:
edible
'the consumer' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'book with twenty per cent off by journalist' is the wordplay.
I cannot really see how this works, but
'book' could be 'b' (abbreviation for book) and 'b' is found in the answer.
'journalist' could be 'ed' (short for editor) and 'ed' is located in the answer.
The remaining letters 'ile' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'good for' is the link.
Can you help me to learn more?
(Other definitions for edible that I've seen before include "in order to eat" , "hoping dinner will be this?" , "It's all right to scoff" , "Good enough to eat" , "Eatable" .)