There's a lot to be said for having it (4,2,3,3)
I believe the answer is:
gift of the gab
'there's' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'a lot to be said for having it' is the wordplay.
I cannot really understand how this works, but
'a' is within the answer.
'to' is found in the answer.
'said' could be 't' (I've seen this in other clues) and 't' is found within the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for gift of the gab that I've seen before include "Ability to speak effortlessly" , "Talent of eloquence?" , "Talent for talking" , "Ability to speak well" , "Ability to talk well" .)