The Larkin Idea, October 1899
The pattern
This still is filed under Risk reversal.
Define
The cost of being wrong moves from the buyer to the seller. The buyer can try. The seller eats the failure.
Mechanism
Inverse risk. A trial, a refund, a pay-after-it-works clause. Distinct from a guarantee stack: here the whole bet is flipped, not itemized.
Verdict
The main objection is what if it does not work for me
Why it works
The whole booklet is one arithmetic argument repeated until it feels like common sense: retail prices are printed only so the reader can do the subtraction, and the premium is positioned not as a bribe but as the reader's own money handed back. Naming the villain - the retailer, the jobber, the travelling salesman - converts a price claim into a grievance the reader already half held, which is far more portable than a discount. The thirty-day trial removes the one thing that stops a stranger buying by mail, and the copy says so out loud rather than burying it in terms. The premium also does the advertising: a $10 oak desk sitting in a neighbour's parlour is a display ad that the neighbour paid to install.
Steal this when
Reach for this when you sell direct and your price advantage comes from a channel you removed rather than from a discount you are giving. Show the retail arithmetic openly, name the intermediary whose margin you deleted, hand the saving back as a tangible object the customer will display, and carry the risk yourself until they are satisfied.