How we calculate

In short: Shopify prices and fees come from shopify.com/de/preise (as of 7 Nov 2026). The website guide values are our own market estimate, not a study. ROAS, margin and break-even follow open formulas shown on each calculator page. We review the values at least once per quarter.

Last updated:

Principles

  • Every figure has a date and a source or is marked as an estimate.
  • Formulas are shown openly on the respective calculator page.
  • All prices are net unless the page says otherwise.
  • We do not give legal, tax or investment advice and no guarantee of results.

Sources per calculator

Shopify cost calculator and Shopify fees calculator

Plans, card fees and surcharges come from shopify.com/de/preise, as of 7 Nov 2026. PayPal’s fees are a check value (2.99% plus €0.39) that you can change in the calculator. The Starter plan is no longer listed on the Shopify pricing page, so its values are not verified.

Website cost calculator

The ranges are our own estimate for the German-speaking market (net), split by type of website and provider. They are based on experience, not on a survey. The ranges and the factor for add-ons are visible in the page source.

ROAS and break-even calculator

Contribution margin per order = (1 − return rate) × (basket − cost of goods) − shipping and fees − return rate × cost per return. Break-even ROAS = basket ÷ contribution margin. Break-even CPA = contribution margin.

Margin and profit calculator

Net = gross ÷ (1 + VAT). Profit = net − cost of goods − shipping − payment fee − advertising − return loss. Margin = profit ÷ net. Markup = (net − cost of goods) ÷ cost of goods.

Updates

We review the values at least once per quarter and whenever a price change becomes known. The “Last updated” date is shown at the top of each page and in the schema (dateModified).

Report an error

Spotted a wrong figure? Write to hello@revenueworks.ai. We check and correct it in writing.

Frequently asked questions

Where do the Shopify prices come from?

From shopify.com/de/preise (https://www.shopify.com/de/preise), prices in euros for Germany, as of 7 Nov 2026.

How current are the values?

We review them at least once per quarter and whenever a price change becomes known. The date is shown with each answer.

Are the website guide values a study?

No. They are typical market ranges that we estimate from experience. They are not representative and do not replace a quote.

Do you store my inputs?

No. The calculators run entirely in your browser. Nothing is saved or sent.