I just ordered a Roku box to handle the Amazon streaming (along with the Netflix and Hulu+ of which I am already a member).

I use the automatic reorder for everything where it is offered. But I set my reorder time to 6 months. Then I just manually reorder when I need more, or cancel after I've had enough. That way it keeps surprise shipments from happening, but I still get the nice discount.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris