Some things never get cheaper, and waiting costs you twice

What follows is the working version of categories where prices only rise: the decisions in the order you actually meet them, with the reasoning attached.

Where falling prices come from

Prices fall over time when output grows, when production gets more efficient, or when new entrants compete an established margin away. Those conditions are common in manufactured goods where volumes rise and each generation is cheaper to make than the last. They are absent wherever supply is fixed, shrinking, or dependent on something that cannot simply be produced in greater quantity.

Land, skilled labour hours, genuinely limited materials and anything already discontinued fall into that second group. Waiting only works when a mechanism exists to push the price down, and in many categories no such mechanism is present.

Discontinued does not mean cheap

When something stops being made, the remaining stock becomes a fixed quantity that only ever decreases from that point on. Early after discontinuation prices often fall, because sellers clear whatever they still hold and the item looks superseded.

Later they can rise, because the people who still need that specific thing have nowhere else to go for it. Spare parts and consumables for discontinued equipment follow this pattern particularly sharply and can become the reason to replace a device. Anyone dependent on a discontinued item is better served buying spares early than hoping the market will be kind later.

Services behave differently from goods

Anything whose main input is human time does not benefit from the production improvements that make manufactured goods cheaper. Wages tend to rise over time, so the real cost of an hour of skilled work rarely falls the way a device does. That is why repairs, trades, professional advice and personal services feel steadily more expensive relative to objects.

Waiting to have work done therefore usually costs more rather than less, quite apart from any damage the delay causes. The exception is where a service becomes partly automated, which changes the input mix and can genuinely reduce the price.

What waiting actually costs

The obvious cost of waiting is the use you did not get, and for anything that saves time or money each month that is a real loss. The second cost is the risk that the thing you wanted stops being available in the specification you wanted it in. There is also an attention cost, because a deferred decision keeps occupying space in your head until it is made.

None of these appear in a comparison of prices, which is why waiting looks free when it very often is not.

A sensible rule is to set a deadline for the wait so that the decision cannot quietly become permanent.

Telling the two kinds of category apart

Ask whether more of the thing can be made if people want more of it, because that single question separates most cases. If the answer is yes and production keeps improving, waiting is likely to be rewarded and there is no rush.

At the till, if the answer is no, or if the supply is already shrinking, waiting is a bet against the direction of travel. Where the item is a service, assume the answer is no unless something has genuinely changed about how it is delivered. The question takes a few seconds and it prevents the most expensive kind of patience there is.

Buying early without overbuying

For constrained items, buying when you find the right one at an ordinary price is usually better than searching for a bargain. That is different from stockpiling, which introduces storage, deterioration and the risk of never needing what you bought. Buy the quantity you can foresee using rather than the quantity that makes the unit rate look best on a spreadsheet.

Across a sale weekend, for consumables tied to equipment you rely on, a modest buffer is prudence rather than speculation. The aim is to remove the risk of being caught without something, not to profit from the category going up.

The takeaway

Ask whether more of the thing can be made, because that answer decides whether patience is a strategy or a slow loss.

Decide what you would pay before you look at what they are asking.