Terminal calculator that prices purchases by decades of service instead of sticker price: cost per decade, cost per use, warranty coverage as a share of expected life, and the break-even year where the durable option beats the cheap replacement ladder. Python 3.8+, standard library only, no network, nothing leaves your machine.
30 Day SummaryOct 7 2026 — Nov 6 2026
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12 Month SummaryNov 6 2025 — Nov 6 2026
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