AFAIK the specials are always nationwide. The Adelaide members would be the ones to comment there.
Once the stored get bedded down and they know what quantities of what product are likely to sell, you shouldn't have a problem getting an item, but if it's likely to be a fast seller then you'd be advised to join the Aldi tragics queuing on a Wednesday or Saturday for the store to open.
Good examples would be really good value fridges and freezers, TVs etc.
I got into our local yesterday and they still had quite a few 20L collapsible water cubes and surprisingly a stack of Mountain Bikes left from the previous Wednesday.
From our point of view, the vac sealers usually hang around for a couple of weeks . edit: the Casino Store had one remaindered for $50 but I'm not a vaccer or I'd have grabbed it.
Aldi 101 unit 4.3.3. credit points 25
All products are displayed on pallets or movable metal "rummage" tables. They clear an area at the back of the store and the new hardware and variety specials go there, so dash for the back of the store.
Then the pallets / tables get progressively moved towards the front of the store and eventually get remaindered.
Food and consumable specials like our Sriracha Sauce start near the registers at the front of the store.
Happy shopping.