Baltimore Bargain House Clothing Sales Catalog, Spring and Summer 1901 (cover)
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
Addresses the buyer's primary objection (risk of poor quality/fit from a mail-order catalog) head-on with an aggressively strong guarantee and a logical explanation for their low prices (no traveling salesmen).
Steal this when
You are selling B2B wholesale via mail and need to overcome the entrenched habit of buying from traveling salespeople.