I had a shipment from the States and asked the same question and when I got here I realised there are very very few things you cannot find. Maybe your favourite brands of things that you can't live without. The two things we can't buy in the regular store are the things we miss the most but illegal to ship.
Stores are fabulous and I disagree about the quality of goods, it is far superior to a lot of other places we have lived. Don't stress over things to buy, be happy that you can get most things!