ROI Calculator for Resellers
Enter the resale price, item cost, shipping cost, and marketplace to see net profit, cash invested, net payout, and ROI after the marketplace fee model is applied.
114.5%
return on item plus shipping cash invested
$29.76
after eBay fees and costs
$26.00
item cost plus seller shipping
$55.76
after $9.24 in marketplace fees
ROI equals net profit divided by item cost plus seller-paid shipping cost. Marketplace fees reduce the net profit before the return percentage is calculated.
Ground ROI in marketplace fee data
ROI depends on net profit after the platform fee model is applied. Use the Fee Index for same-input marketplace rows, Fee Changes for recent policy updates, and Seller Reports for dated summaries before deciding which marketplace gives a repeatable return on the same cash.
After the source check, run the sale price, item cost, shipping cost, and marketplace here to compare the actual return on the flip.
Turn this result into a listing decision
Use the tool result as a starting point, then test payout, break-even price, shipping, and marketplace fit before you publish the listing.
Why ROI can beat margin
Profit margin measures profit against revenue. ROI measures profit against the cash tied up in the item and shipping. For sourcing decisions, ROI often shows whether a flip is worth repeating with limited buying capital.
Use ROI alongside margin. A high-margin sale can still be too small to matter, and a high-dollar sale can tie up too much cash for the return it produces.
Related tools
Check margin when you want revenue efficiency, break-even when you need a hard price floor, and best payout when the same item could fit multiple marketplaces.