thimbleroot

Fees, cost of goods, mileage and a tax set-aside in one reseller sheet. It's in the works, and the free fee calculators are ready now.

The Thimbleroot Reseller Tracker is a paid spreadsheet that isn't built or on sale yet. The three fee calculators below are free on Gumroad today, and WordPress Plugin Intel runs on Apify.

Specimen · N°03 Poshmark Fee Calculator 2026

$2.95 under $15. 20% from $15.

That is Poshmark's seller fee rule for US sales. The free calculator applies it to your price and shows the payout, net profit and margin.

The rule on two sample sale prices

Sample figures. Payout = sale price minus the Poshmark fee.
Sale priceFeePayout
$12.00$2.95$9.05
$40.00$8.00$32.00
SeeFee, payout, net profit and margin for one sale.
TryDownload on Gumroad, $0+
NextThimbleroot Reseller Tracker, a paid sheet that isn't on sale yet.

Counter 1 For resellers

N°05 · Paid spreadsheet

Thimbleroot Reseller Tracker

Coming soon

Not built yet, and not for sale.

It picks up where the free calculators stop: one sale becomes a running record of your selling.

Planned, not final

Inventory log
Each item from purchase to sale.
Mileage log
Miles driven for your selling.
Tax summary
Monthly and yearly sales, fees, cost of goods and profit, with a set-aside at a % you choose.
Dashboard
Results by platform.

Start here, free

  • N°01

    Reseller Fee Calculator 2026

    Enter one sale and see fees, payout, net profit and margin on eBay, Poshmark, Mercari, Depop and Etsy side by side, and which leaves the most profit.

    Download on Gumroad, $0+
    $0+
  • N°02

    eBay Fee Calculator 2026

    eBay final value fee, per-order fee, payout, net profit and margin. The category rate is editable.

    Download on Gumroad, $0+
    $0+
  • N°03

    Poshmark Fee Calculator 2026

    Poshmark fee ($2.95 under $15, 20% from $15), payout, net profit and margin.

    Download on Gumroad, $0+
    $0+

US sellers. Rates checked October 14, 2026, with the source link for each rate in the file's Notes tab. Excel file that also opens in Google Sheets. No macros or add-ons. Not tax or financial advice.

Counter 2 For WordPress

N°04 · Apify Actor

WordPress Plugin Intel

One row per WordPress.org plugin, read from the official WordPress.org plugin API: installs, rating breakdown, days since last update, support resolution rate, compatibility, and optionally recent reviews. Export as JSON, CSV or Excel.

Paused For Chrome

  • N°06

    Peekbrace

    A Chrome extension that shows raw JSON as a tree you can fold. Paused and not available: it is not on the Chrome Web Store.

    Read about Peekbrace
    Paused