Quarters Are Slow Money: Coin Counters and the Real Hourly Math of Coin-Op
Four hundred quarters make $100. The hourly math of a coin-op route, when a coin counter pays for itself, and whether coin income belongs in a freedom plan.
time value
A Cold Plunge Costs More in Minutes Than in Dollars. Here’s the Math I’d Run First
Every cold tub has two prices: what you pay once and the minutes it costs daily. Cost-per-plunge math on 2026 Plunge prices and the order I’d buy in.
