Crossword Genius

Making first real packet, worked where things are sold (11)

Ross

I believe the answer is:

marketplace

I'm a little stuck... Click here to teach me more about this clue!

'where things are sold' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.

'making first real packet worked' is the wordplay.
'making first' becomes 'm' (1st letter of 'making').
'worked' is an anagram indicator.
'real'+'packet'='realpacket'
'realpacket' is an anagram of 'arketplace'.
'm'+'arketplace'='MARKETPLACE'

Can you help me to learn more?

(Other definitions for marketplace that I've seen before include "The world of buying and selling" , "Scene of buying and selling" , "World of commercial transactions" , "Commercial arena" .)

I've seen this clue in The Daily Express.
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