Marketplace Listing ROI

How to use it

1. Enter the marketplace's monthly listing fee, its revenue share percentage, your expected monthly visitors from the marketplace, your conversion rate, and your average revenue per user per month. The revenue share is the input that quietly determines viability, because a marketplace taking a large cut of every sale changes the math far more than the flat listing fee that gets all the attention.
2. Read the net monthly margin (after both the revenue share and the listing fee), gross monthly revenue, the fee paid, the net margin percentage, and the break-even visitor count; the chart shows where a month of gross revenue goes. The break-even visitor count is the most useful output: it is the minimum traffic the marketplace must send you before the listing turns a profit rather than a loss.
3. Use the break-even traffic figure to judge whether the marketplace's audience is large enough to be worth listing on. If you need thousands of monthly visitors to break even and the marketplace is small or niche, the listing may never pay off no matter how good your conversion rate is, which is a reason to decline rather than a problem to optimise.
4. Weigh the net margin percentage against your other channels. A marketplace that takes a 20% revenue share permanently lowers the margin on every customer it sends, so even a profitable listing may be worse than acquiring the same customer directly. Compare the net-of-fee margin here against your direct cost per acquisition before treating marketplace traffic as free money.
5. Re-run if the marketplace changes its fee structure or revenue share, or as you get real conversion data to replace your estimate. For listings on AI marketplaces such as a model provider's plugin directory or GPT store, pair this with the agent cost tool so the per-customer AI cost is netted against the already-reduced marketplace margin.

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Use it from code

The same calculation as a JavaScript module you can import. It runs where you import it, with no request, key or rate limit.

import { compute } from "https://aibizhub.io/engines/marketplace-listing-roi.js";

Input and output contract, TypeScript types and the guide for agents.