All but the white plastic for the back of the drawer are available through Lista. If you can cut that shape into a piece of hard plastic and mount it you can save a few dollars. You can call and speak with either Customer Service or Tech Support. The locks have changed to an interchangeable core...
They are actually built in Holliston, Massachusetts about 30 miles from me. Check out this pic of the tripple box from the Mid-America Truck Show (a little blurry).