Every purchase is traded time

You do not earn money. You exchange hours of a finite life for an hourly rate, in a job you may or may not enjoy. So the honest price of anything is not its dollar figure. It is the hours you must trade to obtain it.

Your real hourly rate

The number on your payslip is not it. Focus on your after-tax pay, because the tax portion was never available to spend.

Take someone on $80,000 gross. That leaves them with $63,880 take-home after tax. A standard Australian full-time work week is 38 hours. That works out to roughly $32.33 an hour, after tax.

Most people have never calculated this number for themselves, and it is smaller than the one on their payslip suggests. It is also generous, because it ignores commuting, unpaid overtime and the cost of being employed at all.

A car, priced in hours

Read the last row again. The upgrade costs more than a full year of your entire working life, every hour of it, with nothing left over for rent or food.

The excitement wears off faster than you think

Most people already know this intuitively: the excitement of something new wears off fast. The satisfaction peaks before you even own it, and within a few months the extraordinary thing has become the ordinary thing. This has a name: hedonic adaptation (the excitement wearing off faster than you think). The things that actually matter in your life are almost never material. Keep that in mind when you're deciding whether something is worth its real cost. This is not an argument for never buying anything nice. It is an argument for knowing what it actually costs you, in the only terms that matter, and making that decision with your eyes open.

Hobbies are not the problem

There is a real difference between spending on something you actively engage with and accumulating possessions for their own sake. Someone who buys a good bike and rides it every weekend has converted hours of work into a hobby: enjoyment, skill and health, that genuinely improves their quality of life.

Someone who spends $4,000 on designer products that are never worn has converted the same hours of work into an object sitting in a wardrobe. The money left their account once too, but nothing comes back the other way.

The test is not price, and it is not about denying yourself things. It is whether the thing is used, and whether you would still want it if nobody could see that you owned it.

Depreciation, and the other thing that $65,000 could have been

Cars lose value predictably. A new car in Australia typically drops 15% to 20% in the first year, and depreciation (the thing losing value as it ages) is steepest across the first three years before flattening out.^[1]

Modelling Zaid's $65,000 SUV on that pattern, and ending around 15% to 20% of the original price at ten years:

The right-hand column is not a prediction, it is an opportunity cost (what you gave up by choosing this instead) calculation: what the same money would have become at the standard 10% assumption used throughout. The two columns are about $157,000 apart at year ten, on a single decision made once, at 30.

Note also what the right-hand column would eventually produce: capital gains (the profit when you sell for more than you paid), which is the profit if it were sold above what was paid. The left-hand column produces the opposite by design.

How to actually use this

This is not for pricing your daily coffee in hours. That is a route to misery, and it is not where the money is anyway. Save this method for anything above roughly a week of your take-home pay, where the decision is infrequent and there is genuinely a choice to make. 1,454 hours, the exact gap between the SUV and the used car from earlier, hits differently than $47,000, and not by accident. You can always make more money. You cannot make more hours. A dollar figure describes what leaves your bank account. An hour figure describes what leaves your life.