Charge for accessing remote estates, primarily (4)
I believe the answer is:
fare
'charge' is the definition.
(I've seen this before)
'for accessing remote estates primarily' is the wordplay.
'primarily' says to take the initial letters.
The initial letters of 'for accessing remote estates' is 'FARE'.
(Other definitions for fare that I've seen before include "Range of food; travel" , "Food, or price of bus ticket" , "Meal" , "Charge for journey" , "Taxi charge; food" .)