$143. Savings: $67. Plus, he avoided a massive customs declaration red flag. A spreadsheet made this visible in 30 seconds.

Value: A unique number for your haul batch (e.g., "Haul #7 - Winter Jackets").

Mara’s life ran on spreadsheets. Not the dull kind for work, but her own creations: Annual Spending , Meal Prep Efficiency , Net Worth Tracker . Every expense, every calorie, every minute was tabulated, color-coded, and cross-referenced.