AI Blocks › Track your numbers
Break-even ad target finder
Paste one product's price and costs. Get its true margin, break-even ROAS and break-even CAC.
Break-even ad target finder is a free AI prompt for the job "Track your numbers". Give the instructions to an AI assistant that supports the required files and tools, then review its output.
Free · No account · Made by AI Blocks · Level: beginner · Thinking: low
What it does
A product that looks like a 70% margin on price minus factory cost can be a 25% margin once shipping, packing, payment fees and refunds are in. Ad goals set on the first number lose money. This prompt builds the full cost of delivery for one product, shows product, gross and contribution margin, then works out the ROAS and CAC where you break even. It names the cost line that hurts most.
You give it
- Selling price (required): without tax. If your price includes tax, say the tax rate.
- Unit cost (required): plus freight and duty per unit.
- Per order (required): shipping to the customer, pick and pack, packaging.
- Payment fee percent (required).
- Refund rate and average discount (required): from your last 90 days. A guess is fine if you say so.
- Marketing share of price (optional).
You get
- The full cost of delivery, line by line
- Product, gross and contribution margin
- Break-even ROAS and CAC
- The one cost line to fix first
Use it when
- You are about to set a ROAS or CAC goal for a product.
- You changed your price or shipping and want the new floor.
- A product sells well but cash feels tight.
How to use it
- Copy the prompt and paste it into a chat with Claude, ChatGPT or Gemini.
- Under it, paste your details: selling price; unit cost; per order; payment fee percent; refund rate and average discount; marketing share of price.
- Send it and read the answer against the checks.
- If a line says MISSING, add that detail and send it again.