With lockers you only have 3 real choices.
Selectable (ARB, Ox, Zip, Ected, E-locker) all will run you about about 700-900. Highly recommend a selectable for the front.
Auto locker (Detroit Soft locker, Grizzly) runs about 460.
Lunchbox locker (Spartan, Lock-right, aussie) run 250-400.