@Hectorc , if I'm not mistaken, ARB is pretty protective of their pricing and generally don't allow any Sales of their equipment. Even when the retailers run coupon offers ARB product is usually excluded from those offers. They will run those specials occasionally where if you buy the lockers you get the air compressor for free. I may be wrong on this though. In a way, I kind of like this, as you always know you're getting the same price, no matter where you shop. A lot of brands operate this way these days.
I believe they extended their sale of buy a locker and get free compressor . I jumped on this already when it started. Ok4wd will have it on their locker page or page of specials right inside the site if the are.