Tools
Four calculators that show what your things really cost.
Cost-Per-Use
The single most important number you can know about anything you own.
Purchase price (€)
Expected lifespan (years)
Uses per year
Estimated resale value (€)
Your cost per use
€0.15
over 2,000 uses
This durable choice€0.15
Cheap, replaced yearly (€90)€0.45
Patina dividend
€600
Kept over 10 years against buying the €90 alternative again every year (€900 spent) while your net cost is €300.
Net ownership cost€300
Annualized€30 / yr
vs. cheap alternative (€0.45/use)67% cheaper
Keep this number
Repair vs Replace
When fixing it beats replacing it. And when it does not.
Recommendation
Repair.
Repair gives you years of use at a fraction of replacement cost.
Repair cost / remaining year€13
Replace cost / year€38
Remaining lifespan6 yrs
Inflation Shield
How buying durable today protects you from tomorrow's prices.
In 10 years, the same item costs
€666
vs. €450 today.
Inflation cost avoided€216
Effective annual return4%
Buying durable now locks in today's prices for a decade.
Product Matchmaker
Recommendations with no affiliate margin behind them.
How often will you use it?
Buy once forever, or buy & resell?
Patina, or pristine?
Your match
Red Wing Iron Ranger
Resoleable, full-grain leather that ages into character. Built for people who walk daily and value repairability.