Awful factory exchanging article for English retailer (9)

I believe the answer is:

sweetshop

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'exchanging article for english retailer' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'awful factory' is the wordplay.
'awful' becomes 'sweet' (I can't justify this - if you can you should believe this answer much more).
'factory' becomes 'shop' (I've seen this in another clue).
'sweet'+'shop'='SWEETSHOP'

Can you help me to learn more?

(Another definition for sweetshop that I've seen is " truffles possibly here?".)

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