One who helps penpal buy elsewhere – only looking in prime locations (7)
I believe the answer is:
enabler
'one who helps penpal buy elsewhere only looking in prime locations' is the definition.
The definition suggests a singular noun which matches the answer.
This is the entire clue.
Can you help me to learn more?
(Other definitions for enabler that I've seen before include "Something that makes (action) possible" , "Someone who makes something possible for another" , "I give authority" , "One who makes possible" , "One giving authority" .)