The book
Worth Every Cent
The 80/20 Way to Build What Your Customers Will Buy
Make every product earn its place.
Eighty20 Publishing · The Field Guide
Worth Every CentThe Field Guide
Fillable PDF availablePrint forthcoming · December 27, 2026 · Coil availability pending
The companion to Worth Every Cent turns the book’s nineteen product decisions into work your team can bring to the table. Thirty-six worksheets pair a blank instrument with a completed example from one of the book’s three invented companies.
Buy the Field Guide
Prices in USD; tax calculated at checkout. Digital editions arrive by email from BookFunnel. All sales are final.
- Preview the Field Guide: Chapter 1: Busy Is Not a Business, including worksheets and completed examples. (PDF)
- About the book
- Team and bulk orders
Available digitally · October 19, 2026.
Read it, then work it
The book makes the case.
The Field Guide does the work.
Worth Every Cent keeps the narrative and the method. The Field Guide holds the working paper: the instruments, worksheets and exercises, ready to fill in for your own business.
Letter-size and built to be written in: a fillable PDF, plus paperback and coil-bound print editions.
Editions
Formats and ISBNs
- Paperback, letterRetail list: US $29.99 · CA $39.99Print forthcoming · December 27, 2026ISBN 9798908160353
- Fillable PDFDirect download: US $10 · Retail list: CA $26.99Available digitally · October 19, 2026ISBN 9798908160377
- Coil-bound, letterRetail list: US $39.99 · CA $52.99Availability pendingISBN 9798908160360
For teams
Work it together.
Each person who fills in the Field Guide needs their own copy. For a leadership team, a cohort or a portfolio, ask about team and bulk orders.