Everyday decisions
Analyze a major purchase
Use a council to test affordability, alternatives, total ownership cost, timing, and downside risk before a major purchase.
The basic idea
The sticker price is only one consideration. A disciplined analysis includes financing, maintenance, insurance, resale, opportunity cost, usage, and the consequences of being wrong.
Compare buying a car, renovating a home, or purchasing expensive equipment against renting, delaying, repairing, or choosing a smaller option.
How to do it
- 1
State the need the purchase solves and how frequently you will use it.
- 2
Provide purchase price, financing terms, recurring costs, useful life, and likely resale value.
- 3
Ask one model to challenge the need and another to identify hidden ownership costs.
- 4
Request thresholds: the price, interest rate, or usage level at which the recommendation changes.
What to watch for
- Verify financial calculations and contract terms independently.
- Sunk costs should not determine whether additional spending is wise.
- A council cannot inspect the item or guarantee future market value.
What a useful result looks like
The decision memo should distinguish affordability from value and identify the conditions under which buying now beats the alternatives.