Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M2437

Razor and Blades Model

Razor and Blades Model
BusinessHigh supportProduct Management
Included
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Selling the base product (razor handle/printer) at a loss or low price, and making long-term profits by selling consumables (blades/ink cartridges) at a high price.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Lock in profits: When doing business, think: What is your razor handle (entry point) and what is your blade (profit source)? If your product is one-time and has no 'blade', the business will be exhausting.

anchor

Anchor fast decisions

By selling the 'base carrier' at a low price (even at a loss) to establish user lock-in and switching costs, then continuously profiting from high-frequency, high-margin 'consumables'. The mechanism leverages the 'entry-continuation' structure of consumption: the one-time acquisition cost is high, but the marginal cost of repurchasing consumables is extremely low and stickiness is strong.

MINIMUM ACTION

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Source support: Explicit

  • link
    en.wikipedia.orghttps://en.wikipedia.org/wiki/Razor-and-blades_modelZH · Explicit
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