As I live here the one thing I always ask family visitors whom come to stay with us is to bring us coffee, you can get freeze dried Carte Noir in a lightweight sealable packet in UK, here I personally find the Nescafe Classic very bitter and expensive and the Gold Blend even more expensive so if you have room I would bring coffee in a plastic lightweight sealable bag.
Wine cheap, as on a previous post, even from local in resort supermarket 2.50 for a retsina, or white/red table wine in a plastic bottle, 1.5ml or Apellia brand, Rose, White, Red again 1.5 litre glass bottle around 3.80 euros.
Metaxa 17 euros for 750ml so expensive considering its a local drink.
Soft drinks around 1.80 - 2 euros for 1.litre bottles.
As we live in the next village we do shop both in resort (SS) and also as previous post in the larger supermarkets in Sidari.
Fruit & Veg, always fresh and well priced mostly locally grown and delivered along with wonderful fresh bread daily to all minimarkets.......