About
ResellMarginCalculator.site is designed to help electronics resellers make faster and more informed pricing decisions.
A simple profitability tool for active resellers
This site exists to answer one question quickly: after fees, shipping, and other costs, is this resale deal actually worth it? Many sellers look at spread first and only realize later that friction costs erased the margin.
The calculator focuses on electronics because that category often carries condition variability, uneven shipping costs, and repair or testing overhead that can distort real profitability.
What makes the calculator useful
It takes your original calculator logic and places it inside a full public-facing website that can be launched as a standalone brand.
Fast math
Check net profit, ROI, and margin in seconds without opening a spreadsheet.
Practical inputs
Handles category fees, shipping classes, condition adjustment, and extra prep costs.
Easy to expand
The multi-page structure leaves room for future guides, blog posts, affiliate content, or capture forms.
Use it before buying
Estimate whether your purchase price still supports your target return after all selling costs are included.
Use it before listing
Confirm that your intended list price is high enough to support your margin goal.
Use it while negotiating
If the projected return is weak, work backward from your required ROI to identify your max buy price.
Want to see the tool in action?
Go to the calculator page and test a few real items from your current sourcing pipeline.