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Seller Guides & Resources

Reseller Guides

Practical reseller guides that help you price smarter, cut marketplace fees and keep more profit on every sale. Each guide pairs real 2026 fee data with actionable steps — no fluff, no filler, written for US sellers who want answers, not lectures.

Pricing Guides

Price too low and you donate your margin to the marketplace. Price too high and the item sits. These guides show you how to find the sweet spot — accounting for every fee before you list.

Platform-Choice Guides

The right marketplace depends on what you sell. These guides match product categories to the platforms where fees are lowest and buyers are most motivated.

Money Guides

Profit is not just revenue minus fees. These guides cover the money side of reselling — taxes, inventory tracking and whether paid seller subscriptions actually pay for themselves.

Free Downloads

Printable and spreadsheet tools you can use offline at the thrift store, the flea market or your packing desk.

Why We Write Guides, Not Just Calculators

A calculator tells you what you keep on one sale. A guide teaches you how to keep more on every sale after that. Knowing that eBay takes 13.6% is useful; knowing when an eBay Store subscription drops that to 12.7% — and exactly how many sales it takes to break even on the monthly fee — is what actually grows your profit.

Every guide on this site follows the same rules as our calculators: built from official 2026 US fee schedules, date-stamped so you know the numbers are current, and written in plain language. When a marketplace changes its fees, our fee schedules log the update and the affected guides get refreshed. No advice here is sponsored.

Frequently Asked Questions

Are these reseller guides free?

Yes — every guide, calculator and download on this site is free forever, with no sign-up and no paywall. We keep the lights on with minimal, clearly disclosed affiliate links, never by charging sellers.

How do I price an item to make a profit after fees?

Start with your item cost and the actual shipping cost, add your target profit, then divide by one minus the platform’s effective fee rate. For example, to net $30 on Mercari’s 10% fee with a $10 item cost and $5 shipping, list at ($30 + $10 + $5) ÷ 0.90 = $50. Our reverse price calculator does this math for every platform automatically.

What is a good profit margin for reselling?

Most full-time resellers target 40–60% margins on the sale price after all fees and shipping. Beginners often accept 25–30% while learning. Margins vary wildly by category — clothing can hit 70%+ on thrifted finds, while electronics often run 15–25%. Our upcoming margin guide breaks down benchmarks by niche.

Do I need to pay taxes on reselling income?

In the US, reselling profit is generally taxable income, and marketplaces issue 1099-K forms once you cross the federal reporting threshold. Keep records of every buy, fee and shipping cost from day one. Our upcoming 1099-K guide explains the current rules — but it is for information only, not tax advice. Talk to a tax professional about your situation.

Start With the Tools

While the full guide library is on its way, the calculators are live now — and they teach you plenty on their own. Run your real numbers through them and watch how fees eat into each sale.