01
Profit economics
Calculate total costs, estimated net profit, profit margin and return on investment from entered assumptions.
Product Opportunity Engine.
Test product economics before risking capital.
An interactive browser-based decision cockpit for evaluating product pricing, margins, ROI and risk scenarios using the assumptions a seller provides.
Founder-built browser application · Published product · No claimed performance metrics
01 / THE PROBLEM
The reason behind the build.
Choosing a product for e-commerce often starts with excitement about the listing price. The harder question is whether the numbers still work after sourcing, shipping, fees and risk. I wanted a tool that makes those trade-offs visible before a seller commits money.
Product objective
Built to help e-commerce sellers think through economics before committing budget.
The solution
An interactive browser-based decision cockpit for evaluating product pricing, margins, ROI and risk scenarios using the assumptions a seller provides.
Designed to be easy to explore, useful before making a decision, and honest about what the outputs do and do not mean.
02 / PRODUCT EXPERIENCE
Designed around real decisions.
Each capability supports the task the user came to complete, rather than adding features just to make the interface look busy.
02
Price safety zone
Explore break-even pricing, target levels and the room between current and safer prices.
03
Stress testing
Adjust supplier costs, shipping, marketplace fees or returns and inspect how sensitive profitability is.
04
Opportunity scoring
Use a transparent decision-support score to identify products that merit deeper research.
05
What-if simulator
See how outcomes change when major assumptions change, without starting a spreadsheet over.
06
Marketplace readiness
Examine the economic fit of the selected marketplace based on manually supplied inputs.
03 / PRODUCT THINKING
From a question to a guided workflow.
Design and implementation were driven by a straightforward progression.
01 / STEP
Define
Identify the decisions a seller must make before committing capital.
02 / STEP
Structure
Translate prices, costs, fees and risk allowances into comparable inputs.
03 / STEP
Calculate
Compute profit, break-even thresholds, risk scenarios and an opportunity score.
04 / STEP
Explain
Present the trade-offs in a responsive dashboard that invites further research.
04 / INTERFACE DETAILS
The product in action.
Real preview assets from the Mohsin Builds project library. Try the working product to explore its inputs and outputs.
05 / ENGINEERING
Simple technology. Useful functionality.
Built as a responsive front-end product that runs in the browser without requiring a backend. The calculations rely on the values provided by the user.
Technology
A lightweight, deployable product
The interface and calculations use standard web technologies; the experience is published using GitHub Pages.
HTML5CSS3Vanilla JavaScriptResponsive Web DesignGitHub Pages
Honest limitations
Useful guidance, not a guarantee
This product does not pull real-time supplier, competitor, sales or market-demand data. Fees and costs are entered manually, so outputs are scenario estimates — not verified market forecasts or guaranteed profitability.
06 / TAKEAWAY
What this product demonstrates.
Good decision tools don't have to predict the market. They can expose which assumptions matter and make uncertainty easier to examine.
It reflects my approach to problem discovery, interaction design, front-end engineering and practical digital product delivery.
MOHSIN BUILDS / PRODUCT CASE STUDY
Explore the tool or discuss a project.
The product is available to try. If you're exploring something similar, let's talk about the actual problem.