Margin, markup and pricing. Work out profit margin, markup and the right selling price, exactly, including marketplace and payment fees.
https://plugins-worker.demos.42a.ai/profit-margin/mcpSettings → Security and login → Developer mode → chatgpt.com/plugins → + → paste the URL. After a tool change: Refresh, then a new chat.
| Prompt | Tool | Expected |
|---|---|---|
| I buy a product for $40 and sell it for $65. What is my margin and markup? | calculate_margin | $25 profit per unit: 38.46% margin and 62.5% markup. |
| My cost is $12 and I want a 40% margin. What price, and what markup is that? | calculate_margin | Price $20.00, $8 profit, which is a 66.67% markup. |
| I sell an online course for $49.99, it costs me $18.50 per student, and card processing takes 2.9% + $0.30. Net margin? | calculate_margin | Fees $1.75 per sale; net profit $29.74 and net margin 59.49% (gross margin 62.99%). |
| Cost $30, price $50, I sell about 400 a month with $5,000 fixed costs. What does a 20% discount do to my margin, and where do I break even? | calculate_margin | 40% margin now; break-even at 250 units. A 20% discount cuts the margin to 25% and needs 100% more sales (800 units) for the same profit. |
| What price do I need for a 60% margin on an $18 item after a 15% marketplace referral fee? | price_for_margin | At least $72.00 (18 ÷ (1 - 0.15 - 0.60)); charm price $72.99 gives a 60.34% margin. |
| How much sales tax is on a $200 purchase in Texas? | none | Sales tax is a different calculation. |
| What return did my stock make if I bought at $40 and sold at $65? | none | Investment return, not a product margin. |
| Write a pricing page for my SaaS product. | none | Copywriting needs no margin maths. |