Pricey plane section (5,5)
I believe the answer is:
first class
'pricey plane section' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for first class that I've seen before include "Luxury style of travel" , "Best train seating area" , "kindergarten?" , "Marvellous!" , "Excellent" .)