Key takeaways
- Prep spend is part of item cost.
- Fees are computed per platform.
- Shipping charged and paid are separate.
- Unsold capital and days listed are visible.
Reselling is a business where the sale price is the least informative number. A two hundred dollar sale on a marketplace taking thirteen percent plus payment processing, with twenty-five dollars of shipping you under-charged for, on an item that cost thirty dollars and forty-eight dollars of prep, is not a two hundred dollar sale. Most resellers know this and still track sales rather than profit. ResellDesk US tracks what was kept.
What an item really cost
Total cost adds prep spend to the purchase price, so refinishing, dry cleaning, rewiring and reglueing all land on the item.
A free curbside find that took forty-six dollars of glue and wax is not a free item, and treating it as one distorts every margin calculation that follows.
Fees belong to the platform
Each platform carries its own selling fee and payment fee percentages, applied to the sale price plus any shipping charged.
Platform performance then answers the question resellers argue about constantly: which marketplace actually keeps the most of your money.
Shipping is where the margin goes
Shipping charged and shipping cost are recorded separately, so an under-charged heavy item shows up as the loss it is.
Packaging is drawn against the sale too, because boxes and bubble wrap are small individually and material across a year.
Unsold capital
Days listed counts from the listing date for anything unsold, and unsold inventory at cost totals the money sitting on shelves.
That figure is the real constraint on a reselling business, and it is invisible in any record that only tracks sales.
Review exceptions every week
Resolve duplicate IDs, missing links, overdue balances, negative amounts, and open operational items in CHECKS before using the dashboard for decisions.
ResellDesk US Private Google Sheets Web App is designed for use with a Google account, Google Sheets, and Apps Script, using owner-only deployment by default.
No marketplace listing or API integration, no automated fee import or payout reconciliation, no sales tax or marketplace facilitator reporting, no shipping label purchase, and no repricing or listing automation.

