Marketplace Fee & Profit Calculator
Compare estimated fees, shipping, margin, ROI, and net profit across editable marketplace assumptions.
Use this free resource →Free reseller resources
Free tools for online resellers.
Use practical browser-based tools and checklists for listing titles, sourcing decisions, SKUs, inventory organization, cross-listing, and business planning. No account is required.
Poshmark Profit Calculator
Estimate Poshmark profit using editable fee, item-cost, shipping-discount, margin, and ROI assumptions.
Use this free resource →eBay Fee & Net Profit Calculator
Estimate eBay selling fees, promoted listing cost, shipping, item cost, and expected net profit using the fee rates that apply to your account.
Use this free resource →Reseller Profit Calculator
Calculate per-item resale profit, marketplace fees, promoted fees, shipping, margin, ROI, and break-even sale price.
Use this free resource →Reseller Sell-Through Rate Calculator
Calculate sell-through from comparable sold and active inventory to use as a demand proxy before sourcing.
Use this free resource →Inventory Aging Report Template
Download a free CSV and group stale inventory by age so you can decide what to refresh, reprice, bundle, or liquidate.
Use this free resource →Reseller Sourcing Checklist
Use a 10-step pre-buy checklist for item identity, condition, sold evidence, fees, shipping, storage, margin, and maximum buy price.
Use this free resource →eBay Title Checker
Count characters against eBay's 80-character title limit and see remaining space instantly.
Use this free resource →eBay Listing Checklist
Review title, photos, condition, item specifics, measurements, pricing, shipping, SKU, and the final live listing.
Use this free resource →Cross-Listing Checklist
Prepare one-of-one inventory for multiple marketplaces while reducing data mistakes and double-selling risk.
Use this free resource →Reseller SKU Generator
Create readable SKUs using product and storage details for faster inventory retrieval.
Use this free resource →Free Inventory Template
Download a CSV starter sheet for SKU, cost, storage, marketplace, status, and sold data.
Use this free resource →Reseller Sourcing & Max Buy Calculator
Calculate maximum buy price, projected profit, margin, and ROI before you purchase resale inventory.
Use this free resource →Reseller Software ROI Calculator
Model time saved, potential profit impact, software subscription cost, and monthly software ROI using your own assumptions.
Use this free resource →Free to share
Free resources you can share and cite.
Reseller educators, bloggers, newsletters, and seller communities may link directly to these free tools when they are useful to their audience. No account is required to use them.
Free marketplace profit calculator
Compare net profit across editable marketplace fee and promotion assumptions.
Open resource →Free Poshmark profit calculator
Estimate Poshmark profit with editable fees, shipping discounts, margin, and ROI.
Open resource →Free eBay fee calculator
Estimate fees and net profit using your own eBay fee and promoted-listing rates.
Open resource →Free eBay title checker
Check an eBay title against the 80-character limit.
Open resource →Free reseller inventory template
Download a CSV template for SKU, cost, storage, marketplace, and sold data.
Open resource →Free reseller sourcing calculator
Calculate a maximum buy price, projected profit, margin, and ROI before purchasing inventory.
Open resource →Free reseller item profit calculator
Calculate resale profit, marketplace fees, shipping, margin, ROI, and break-even price.
Open resource →Free reseller sourcing checklist
Use a 10-step pre-buy checklist for condition, sold evidence, fees, shipping, margin, and maximum buy price.
Open resource →Free sell-through rate calculator
Compare sold and active units to calculate a transparent sell-through demand proxy.
Open resource →Free inventory aging template
Download a CSV template for aging stale reseller inventory and planning next actions.
Open resource →Free reseller software ROI calculator
Estimate time savings, profit impact, and software subscription ROI.
Open resource →Cross-listing checklist
Review a practical checklist for multi-marketplace listing workflows.
Open resource →Creators, blogs & reseller communities
Share these free tools directly with your audience.
Direct links are welcome. No account is required and no partnership agreement is needed just to cite or share a free public resource.
When the spreadsheet and copy-paste workflow gets too big
Inzoly connects product data, photos, private inventory fields, marketplace listings, orders, analytics, and seller-reviewed AI in one reseller workspace. Explore reseller software, eBay inventory management, and cross-listing workflows when you are ready to move beyond free tools.