Most families here shop once a month for the heavy things and then top up during the week. That is how this shop is stocked and how the site is arranged.
Sacks and tins are kept in quantity because they keep. We would rather hold too much rice than too little, since rice does not spoil and a shortage on an island lasts until the next boat.
Order the month's list here and it will be made up in sacks with your name on it. Take a delivery round or send somebody to collect it, whichever suits.