Zing and EB Games may be the one company, but their in-hand stock does not show up on both sites if it is a dedicated Zing store that has stock.
It is correct that the Blacktown store is showing stock on the Zing website, but not on the EB Games website (I'm guessing it means that the Blacktown store is a Zing store, and not an EB Games store that has a Zing section inside somewhere, because Blacktown doesn't show up on the EB Games store-finder page).

Also, for everyone else, any stock that's in-hand at a store, can't be shipped as home delivery, so unfortunately anyone wanting this one, has to go to the store (or have someone get it for you and post it to you).