Sales talk mostly about European Community money (6)
I believe the answer is:
specie
'money' is the definition.
(I've seen this before)
'sales talk mostly about european community' is the wordplay.
'sales talk' becomes 'spiel' (I've seen this in another clue).
'mostly' means to remove the last letter.
'about' indicates putting letters inside.
'european community' becomes 'EC' (abbreviation).
'spiel' with its final letter taken off is 'spie'.
'spie' placed around 'ec' is 'SPECIE'.
(Other definitions for specie that I've seen before include "Money in the form of coin" , "Coin as opposed to paper money" , "Money as coins" , "Coinage, metal money" , "Broken pieces for coined money" .)