A worked example
Use a ₩250,000 locker fifteen times
- Start with
- KRW · season ₩250,000 · daily storage ₩15,000+transport ₩8,000 · no extra fee · 15 visits
- Check the result
- Break-even 11 visits · alternative ₩345,000 · save ₩95,000
Rounding up ₩250,000/₩23,000 gives eleven; the spending comparison uses fifteen planned visits.