Target is running a similar promotion (probably why Amazon is doing it). In Target's case, though, you can
also get that 33.3% discount by placing an order with 3 of each desired item, then canceling 2 of them.
This may have the side effect of causing an order to qualify for free shipping, which is not nullified if you
drop below the free-ship threshold by canceling. That's intended as an ethics advisory, not a money-saver.
