Choose plausible sold-price scenarios
Use evidence from comparable completed transactions where available. Keep condition and included accessories consistent with the item you might buy.
Compare the downside before buying
A resale decision can look attractive at one optimistic price and weak at a lower price or longer holding time. Enter several price-and-time scenarios with your actual costs and fee assumptions to compare the cash outcome side by side.
Put it into practice
Enter the cost and fee basis
Use current rules for your actual marketplace and account. The tool lets percentage fees apply to the item alone or item plus buyer-paid shipping.
Inspect both price and time
A higher nominal profit may tie up cash longer. Review the whole scenario rather than ranking a purchase by a single appealing figure.
A worked example
A sale at 45 after 60 assumed days and a sale at 35 after 30 assumed days are not equivalent cash-use choices. The table makes both assumptions visible without deciding which will happen.
Resale price and time sensitivity comparison
A resale decision can look attractive at one optimistic price and weak at a lower price or longer holding time. Enter several price-and-time scenarios with your actual costs and fee assumptions to compare the cash outcome side by side.
Selling time is an assumption you provide, not a market forecast. Profit per assumed day is simple division and does not represent a recurring daily income. Return on item cost excludes labor and any cost you did not enter.
Inputs are processed in this page. Nothing is submitted to the app or a business. Download a result to keep it; this page does not automatically save your work.
What to keep in mind
This page does not fetch sold listings or know your marketplace's current fees. Enter the actual fee basis and rates from your account. Tax, returns and your time are separate costs unless you include them.
Take the next step
with Sift.
Sift's listing focuses on resale research, sell-through and visible buy-or-pass arithmetic. It describes estimating proceeds after platform fees and showing the sales evidence used for an estimate.
View Sift on the App StoreThe current listing requires iOS 26.0 or later. Some features have additional device requirements. Check the listing and purchase screen for current availability and terms.