Brand New Air Lockers for most model's. 
Enquire for your make and model. 
$1200 for air locker and compressor.
$2000 for front and rear with compressor.
Comes with all wiring, switches, fittings, airlines.
Brand is HF. 
Postage available, about $70 for complete set, about $50 for one locker and compressor, Use the postage calculator at the bottom, it calculates for 1 locker and compressor. 
Pick Up available Bray Park, QLD, 4500.
Ordering and delivery time is about 2-3 weeks.