Price Smarter. Protect Your Profit.
Learn how to price resale stock, understand your true selling costs and check profit, margin and ROI before you buy, list or accept an offer.
What Are You Trying to Work Out?
Choose the question you have now and go directly to the SellerStack tool designed to help answer it.
What Should I Charge?
Work backwards from your costs and desired profit to estimate a sensible target selling price.
Calculate Selling Price → 💰 02How Much Profit Will I Make?
See what could remain after stock, marketplace, postage, packaging and other selling costs.
Calculate Profit → 📈 03Is This Deal Worth Buying?
Measure the projected return generated by the money you invest in purchasing the item.
Calculate ROI → ⚖️ 04What Is My Lowest Safe Price?
Find the approximate selling price needed to cover your entered costs without making a loss.
Find Break-Even Price → 🛒 05How Much Can I Afford to Pay?
Work backwards from the expected sale and your targets to establish a buying ceiling.
Find Maximum Buy Price → 📦 06Should I Sell It as a Bundle?
Compare bundle pricing with individual sales and test how much discount your profit can absorb.
Calculate Bundle Price →Revenue Is Not Profit
Your selling price is only the starting point. What matters is what remains after every relevant cost required to complete the sale.
Understand the Strategy Behind the Number
Calculators tell you what the figures look like. These guides explain the pricing, fee and market decisions behind those figures.
How to Price Your Products for Maximum Profit
Learn how sold listings, costs, competition, pricing position and profit targets should work together when setting a selling price.
Read the Pricing Guide →How to Calculate Marketplace Fees
Understand why selling fees can change the economics of a product and why the headline selling price is not enough.
Understand Marketplace Fees →How Much Does eBay Take Per Sale?
Go deeper into eBay’s UK selling costs and understand how seller status, category and optional services can affect the final result.
Read the eBay Fee Guide →Six Tools. Six Different Pricing Decisions.
Use the calculator that matches the question you are trying to answer rather than forcing one tool to do every job.
Profit Often Starts With the Price You Pay
Once stock is purchased, many of your costs are already locked in. Work backwards before you buy so the sourcing decision leaves enough room for fees, fulfilment and your required return.
How Much Should You Pay for Resale Stock?
Learn how to start with a realistic selling price, account for costs and establish a sensible buying limit before committing your cash.
Learn the Buying Method →Maximum Buy Price Calculator
Enter the expected sale, costs and your own profit targets to calculate the highest buying price the opportunity can support.
Set Your Buying Limit →ROI Calculator
Compare the profit generated with the amount invested in stock to see how efficiently your sourcing capital is working.
Check the Return →The Same Sale Can Produce Different Results
Selling fees, payment processing, fulfilment and other platform costs differ. Use the platform-specific tools when you need more detail than a general profit estimate.
Model seller fees, optional advertising and your wider selling costs.
Include referral, fulfilment, storage and relevant Amazon product costs.
Check profit after stock and your own optional seller expenses.
Model payment processing, optional boosting and your fulfilment costs.
Account for Etsy’s different transaction, processing and listing costs.
Learn how commission, affiliate payments, fulfilment and promotions can affect margin.
Calculate profit for local or shipped sales while accounting for stock, fulfilment and your own selling costs.
Estimate payment, transaction and fulfilment costs to see the profit and margin left from a Shopify sale.
Compare estimated marketplace fees, profit, margin and ROI using one product scenario.
Why Isn’t the Profit Working?
Start with the problem you can see, then follow it to the part of the calculation most likely to need attention.
Recommended Free SellerStack Resource
Source Smarter. Protect Your Profit.
The difference between profitable resellers and struggling sellers isn’t luck—it’s having a repeatable system.
- Profit & ROI worksheets
- Marketplace fee cheat sheets
- Pricing checklist
- Sourcing checklist
- Shipping cost-saving guide
- Access to SellerStack calculators
Ready to Make Better Decisions?
Get the practical worksheets, checklists and reseller resources designed to help you source, price and sell with more confidence.
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Profit Connects Every Selling Decision
Once the numbers make sense, continue into the part of SellerStack that matches what you need to do next.
Calculate Before You Buy. Price Before You List.
SellerStack connects sourcing, pricing, marketplace costs and profit tools so you can test the economics of a sale before committing your money.