The same again, and not so much of it! (7)
I believe the answer is:
replica
'the same' is the definition.
(I've seen this before)
'again and not so much of it' is the wordplay.
I cannot quite see how this works, but
'again' could be 're' (prefix meaning 'again') and 're' is located in the answer.
The remaining letters 'plica' 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).
Can you help me to learn more?
(Other definitions for replica that I've seen before include "I parcel (anag) - reproduction" , "Parcel I arranged as exact copy" , "Duplicate" , "Parcel I found with exact copy" , "Exact copy or model" .)