Use it before you buy, not after.
The calculator is designed for the moment you are standing in an op shop, checking a Marketplace bundle or deciding whether to make an offer. If the answer is thin, the safest profit move may be walking away.
eBay profit tool
Reseller ROI Calculator Australia
A quick way to check whether an op shop find, Facebook Marketplace pickup or clearance item has enough margin before you buy it.
Start simple, then refine.
Packaging, promoted listings and time cost are hidden by default so the tool feels light. Sellers who want a sharper estimate can open the fine-tune section and adjust the numbers.
Profit starts before the listing.
Good resale decisions come from knowing your buy price, likely sale price, postage cost and margin before you commit cash to stock.
FAQ
Common reseller ROI questions
What is reseller ROI?
Reseller ROI compares the estimated profit from an item against the amount you paid for the item. If you buy something for AU$10 and make AU$20 profit, that is roughly a 200% ROI before considering your time.
Does this calculator include eBay fees?
Yes. You can choose free selling, standard fees, a store or pro estimate, or enter custom fee numbers. The estimate is a planning guide only because eBay fees can vary by seller status, category and optional upgrades.
Should I include postage in the profit estimate?
Yes. Postage can change whether a deal is worth buying. The calculator defaults postage charged to the buyer to the same amount as your postage cost, but you can fine-tune this if you absorb postage or charge a different amount.
What is a good ROI for reselling?
It depends on the item, risk and time involved. This calculator defaults to a 100% target ROI and AU$10 minimum profit, which is a practical starting point for many small Australian resellers.