Reseller Guides

Practical guides on fees, taxes, sourcing, and scaling — written for eBay, Poshmark, Depop, Mercari, StockX, and every other platform resellers use to make money.

How Much Does eBay Take? Seller Fees Explained

A quick answer for what eBay takes from a sale, plus category rates, shipping-fee rules, promoted listings, and real net payout math.

The Reseller's Guide to Self-Employment Tax in 2026

What counts as income, what you can deduct as a reseller, and how to set aside the right amount every month so tax time isn't a scramble.

Clearing Your Death Pile: The 4-Stage System That Works

Every reseller has one. Here's the age-banded strategy for turning stuck inventory back into cash — without panic discounting everything.

Thrift Store vs Estate Sale vs eBay Arbitrage: Which Has the Best ROI?

Data from 500+ stokd users shows which sourcing channels consistently outperform — and which ones look good until you do the math.

Spreadsheet Systems

Reseller Spreadsheet Template: Columns to Track Profit

The inventory, fee, sale, ROI, and tax columns every reseller spreadsheet needs before it turns into spreadsheet chaos.

Reseller Inventory Management: Track Stock, COGS, Profit

A clean operating system for tracking resale stock, SKUs, cost basis, fees, storage, sell-through, and true profit across every marketplace.

Facebook Marketplace

Facebook Marketplace Seller Tracker: Inventory, Profit, ROI

A practical tracking workflow for local pickup flips: cost basis, source, listing age, sale price, fees, profit, ROI, and stale stock.

Reseller Accounting Software: Track COGS, Fees, Profit

What resellers need to track before tax time: COGS, inventory value, platform fees, shipping, expenses, profit, and ROI by source.

Depop Inventory

Depop Inventory Tracker for Resellers

A practical tracking workflow for Depop stock, SKUs, sourcing cost, listing age, fees, shipping, net profit, and ROI.

Whatnot Profit Calculator: Fees, Shipping, COGS

A practical Whatnot seller workflow for estimating commission, payment processing, shipping, cost basis, break-even price, margin, and ROI.

Mercari Profit Calculator: Fees, Shipping, COGS

A practical Mercari seller workflow for estimating fees, shipping, cost basis, break-even price, margin, ROI, and stale inventory risk.

Tools mentioned in this blog

Profit Calculator eBay Fee Calculator Poshmark Fee Calculator ROI Calculator Tax Estimator Lot Splitter Inventory Management Guide Facebook Marketplace Tracker Accounting Software Guide Depop Inventory Tracker Whatnot Profit Calculator Guide Mercari Profit Calculator Guide Spreadsheet Import