A series of log books
COST PER ___
Dead-serious record books for deeply unserious hobbies. Every one has been asked whether the eggs, the tomatoes, or the boat are “basically free.” These are the books that let you answer with a number.
Real logs your vet, your mechanic, or your next owner will thank you for. Monthly reports that do the arithmetic you’ve been avoiding. A checkbox for whether the purchase was for the animal, the plant, the boat, or you.
The books
Free calculators
Each book has a matching calculator. Use it online, open it in Google Sheets, or download it for Excel. Enter the money and the output, and it works out the cost per egg, per tomato, or per nautical mile, this month and lifetime, against what the store or the rental place would have charged. No sign-up, nothing uploaded.
- Cost Per Egg calculator (online, Google Sheets, or Excel) · about the book
- Cost Per Tomato calculator (online, Google Sheets, or Excel) · about the book
- Cost Per Nautical Mile calculator (online, Google Sheets, or Excel) · about the book
About the series
Every Cost Per book follows the same shape. A startup sheet for everything you spent before the first egg, tomato, or trip. One full page per expense, with the boxes that matter: who was it for, was it necessary, who approved it. A monthly report that turns the dollars and the output into one honest statistic. And the useful part: real rosters, health logs, maintenance logs, and trackers you’ll actually keep.
They are 6 by 9 inch paperbacks, 96 to 108 pages, printed on demand through Amazon. They make good gifts for the new owner, the old owner, and anyone who has ever said “it’s basically paid for itself.”