Source: https://oguzerol.com/en/price-cost-calculation-screen/ [ View full size](https://oguzerol.com/gorseller/senaryo/price-cost-calculation-screen-senaryo-en.webp) # Price and Cost Calculation Screen [Oğuz Erol](https://oguzerol.com/en/about-me/) | 2 min read Sometimes the user enters a selling price to review margin; at other times they set a target margin and need a proposed price. ## How the Price and Cost Calculation Screen can work I can create a screen where the active input is clear and the dependent values recalculate under defined rules. Cost sources, rounding and discount authority need to be agreed as business choices, not left as ambiguous cells. An Excel formula or Google Sheets calculation produces a result, but the active user input still needs to be clear. A custom screen can show calculation direction and approved rules explicitly. As Oğuz Erol, I develop custom web apps for this workflow. Once calculation inputs and commercial rules are clear, I aim to prepare an initial working calculation screen quickly; examples set the scope. ## Frequently Asked Questions ### Can a user enter both price and target margin? The active input and calculated result are made explicit, with rules to prevent contradictory entries. ### What happens if a rounding rule changes? Rounding and discount rules are defined explicitly, and the effect of a change can be reviewed. ## Discuss your workflow [Discuss your workflow](https://oguzerol.com/en/contact/) [Explore custom web apps for your team](https://oguzerol.com/en/custom-web-apps-for-your-team/) ## Related services - [Dependent Dropdown Custom Forms](https://oguzerol.com/en/dependent-dropdown-custom-forms/) - [Product and Customer Autofill Form](https://oguzerol.com/en/product-customer-autofill-form/) [Back to top ↑](https://oguzerol.com/en/price-cost-calculation-screen/#icerik) ## You may also find these useful [Cost-Protected Quoting PortalA quote-building portal that lets sales use approved prices while protecting cost and margin details. Built for Excel and Google Sheets workflows.](https://oguzerol.com/en/cost-protected-quoting-portal/)[Expense Permissions and Reporting ScreenA tailored panel that separates expense entry, team visibility and company-total access by user role. Built for Excel and Google Sheets workflows.](https://oguzerol.com/en/expense-permissions-reporting-screen/)[Expense Receipt and Document TrackingA tailored expense app that links receipts and documents to the relevant expense record and tracks missing evidence separately. Built for Excel workflows.](https://oguzerol.com/en/expense-receipt-document-tracking/) [Browse all articles →](https://oguzerol.com/en/articles/) WHAT YOU CAN ASK FOR ## How do I work? Work-hour packages Tell me about your business and what you need on WhatsApp or by phone; we agree on **a work block of somewhere between 5 and 40 hours** and I start doing what is needed. What you get is not a calendar window — it is net working hours spent directly on your business. I can use 40 hours working three days straight, or deliberately spread it out and finish it over a year — whatever the work calls for. I do not spend my time estimating how long something will take, I spend it doing the work; every hour I spend leaves a lasting result in your business. We keep going for as long as you find it useful. WORK BLOCKS ## Why not monthly? Is 40 hours a week? On a fixed monthly fee both sides are watching the wrong thing: you watch a fixed cost, the other side watches how many more contracts like this they can line up. Working by the hour puts us both in front of the same thing — the real value of the work that got done. I know not having an upfront answer to "how much will this cost in total?" is the natural cost of this model. But instead of paying a fixed fee for months to a setup that is not producing results, you only pay for the qualified time spent on your work — and you see exactly where that time went, start to finish. That is why my clients keep coming back. 5hours300€ + VAT60€ per hour[Choose this block](https://wa.me/905496546489?text=Hi%2C%20I%27d%20like%20info%20about%20the%205-hour%20work%20block.) 10hours500€ + VAT50€ per hour[Choose this block](https://wa.me/905496546489?text=Hi%2C%20I%27d%20like%20info%20about%20the%2010-hour%20work%20block.) 20hours800€ + VAT40€ per hour[Choose this block](https://wa.me/905496546489?text=Hi%2C%20I%27d%20like%20info%20about%20the%2020-hour%20work%20block.) 40hours1,400€ + VAT35€ per hour[Choose this block](https://wa.me/905496546489?text=Hi%2C%20I%27d%20like%20info%20about%20the%2040-hour%20work%20block.)