What's said when going for a bargain, we hear (7)
I believe the answer is:
goodbye
'what's said when going' is the definition.
I can't judge whether this defines the answer.
'bargain we hear' is the wordplay.
'bargain' becomes 'good buy' (I've seen this in another clue).
'we hear' shows a homophone (sound like).
'goodbuy' is a homophone of 'GOODBYE'.
'for a' is the link.
Can you help me to learn more?
(Other definitions for goodbye that I've seen before include "Cheerio" , "6 Down" , "Adieu" , "parting" , "Cheers" .)