Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For K-12 Students · Monopoly Pricing

Monopoly Pricing for a comparative-advantage trade

Built for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework. Simulate a comparative-advantage trade live below — adjust the inputs and watch it respond, right in your browser.

Monopoly PricingLive

market power & deadweight loss

Controls

Presets

Marginal cost

A monopolist maximizes profit where marginal revenue equals marginal cost — then charges the price the demand curve allows. Because MR lies below demand, the monopoly produces less and charges more than a competitive market (where price equals MC). The red triangle is the deadweight loss: mutually beneficial trades that never happen.

▶ Run in Python

Data Inspector

Monopoly price$65.0

Monopoly qty35.0

Competitive qty70.0

Deadweight loss613

Profit1225

Governing equation

M R = 100 - 2 Q = M C = 30 \Rightarrow Q_{m} = 35.0, P_{m} = $65.0

Reading this result: At MC = $30, the monopolist makes 35 units and charges $65 — a $35 markup over cost. That output is exactly half the competitive 70, and the shaded triangle (613) is the welfare lost to that restraint.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

Also for:Students Researchers Educators Engineers Hobbyists & Makers First Responders General version →

More with Monopoly Pricing

Monopoly Pricing for a supply-demand market Monopoly Pricing for a monopoly Monopoly Pricing for an auction Monopoly Pricing for a tax policy Monopoly Pricing for a trade tariff Monopoly Pricing for an inflation model Monopoly Pricing for a labor market Monopoly Pricing for a game-theory standoff

Frequently asked questions

Is this good for k-12 students?: Yes — this version of "Monopoly Pricing for a comparative-advantage trade" is framed for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.