The Saver Spot

The bulk aisle is sold on unit price alone, and unit price alone is a bad guide. Three other numbers decide it.

Consumption rate

A 20lb bag of rice at 75¢/lb against 99¢ in the box saves $4.80. We eat about 2lb of rice a month, so that bag is ten months of rice and the saving is 48¢ a month. Real, and small. Whereas the 4lb bag of coffee we get through in seven weeks saves about $9 each time, which is worth planning around.

The rule that falls out: bulk pays on things you get through in under three months, and is mostly neutral on things that take a year.

Spoilage

Flour and nuts go rancid, and the big bag is exactly the one you forget. I lost about $11 of wholemeal flour last winter to precisely this. If the saving is $4 and you throw away a quarter of the bag, the buy lost money and it will not feel like it did, because the loss happens six months later in a different mood.

Storage

Freezer space is a real, finite resource with an opportunity cost, and I have written up the week it cost me four pounds of butter in the 08/10/2026 roundup. If a bulk buy displaces a better one, count that.

Things that are almost always worth it here

• Dried beans and lentils. Cheap, indefinite, and used weekly.
• Bicarbonate of soda and vinegar for cleaning.
• Loo roll, if you have anywhere to put it. No spoilage, guaranteed consumption.
• Canning lids in July, for the reason in the 07/27/2026 roundup.

And almost never

• Anything with a flavour you have not already committed to.
• Cooking oil beyond about six months of use.
• Sauces and condiments, which are mostly the thing at the back of the fridge in eighteen months.