05 · Make It. Sell It. Stand Behind It.
The video tells the story. This page takes the price apart: which costs arrive with every single item, which arrive once however many you make, and the exact point in a day where the two of them stop mattering equally.
WHAT THIS LESSON TEACHES
- Three steps: build it properly, describe it honestly, decide in advance what happens when it fails.
- Every cup poured cost $0.3540, whether somebody paid for it or somebody sent it back.
- Something bought once, like the $3.30 sign, only has to be earned back once.
- Collected $57.50, kept $36.31. Both are true and only the second one decides anything.
- A complaint is a free description of the next version, delivered by the person who found the fault.
THE ONE ACTION
Write the four lines: the thing, what one costs you, what you buy once, an honest price
One action per lesson. Not a homework pile — one thing, small enough that it actually happens this week.
YOUR FAMILY HANDOUT
PDF
Make Sell Stand Behind Study GuidePublished worksheet for this lesson
GO DEEPER IN THE BOOK
Money, Start Here
Chapter 5, page 44
The expanded edition of this lesson's handout, sold separately: ten pages on this one lesson — the story, the worked math at three scales, the six what-ifs, the traps, and the deeper layer.
Digital edition · $9.99Paperback on Amazon · $24.99WORDS IN THIS LESSON
REVENUEPROFITUNIT COSTMARGINBREAK-EVENWARRANTY
Plain about what this is. General financial education, not financial advice, not tax advice or investment advice, and not a recommendation about your situation. Every dollar figure is an invented practice number for a made-up household. Written for adults, 18+.