Ownership value
Yacht sail lifetime-cost calculator
Use the same useful-life unit for both options. Test conservative and optimistic assumptions before deciding.
Worked example
Example: price is not total value
A $7,000 sail used for seven seasons with $180 annual care and $600 repairs costs about $1,266 per season. A $9,000 sail used for ten with $220 annual care and $500 repairs costs about $1,170.

Continue the decision