Master the Platforms. Maximize the Profit
Don’t just guess where to list. We break down the fees, the audiences, and the algorithms of every major platform so you know exactly where your inventory belongs
Start Here: The Marketplace Strategy
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eBay vs. Poshmark vs. Mercari: Where Should You Actually Sell in 2026?
Stop asking which reselling app is the easiest. Ask where the liquidity is. In this breakdown, we compare eBay, Poshmark, and Mercari on fees, shipping, and buyer traffic to help you decide where to list your inventory for maximum profit.
The Platform Strategies
eBay
The global giant has 135 million buyers. The best zone for electronics, collectibles, and hard goods
Poshmark
Flat shipping and higher prices for fashion. Learn the sharing strategies that win without spending all day on your phone
Mercari
Learn about the 2026 fee updates, the truth about return policies
The Official Rulebooks
Strategy Calculators
Recent Marketplace Articles
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Mercari Selling Strategy: How to Win on the “No-Hassle” Marketplace
Mercari is often called the “lazy” marketplace, but for a professional, it is a high-speed sales engine. By understanding the 2026 fee shifts and mastering the platform’s unique return window, you can build a Mercari selling strategy that captures buyers who never touch eBay or Poshmark.
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Poshmark Selling Strategy: How to Automate and Scale Your Closet
Poshmark is a “social” marketplace, but that doesn’t mean you have to spend all day on your phone. By utilizing a Poshmark selling strategy built on automation and flat-rate shipping, you can capture the high-margin fashion audience without the manual fatigue. Discover how Nifty.ai keeps your closet at the top of the feed while you focus on scaling.
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eBay Selling Strategy: Mastery Tips for Maximum Reseller Profit
Master your eBay selling strategy with professional-grade automation. Learn how to maximize your $25 quarterly shipping credit, use the 3.1% promotion rule for search visibility, and implement auto-decline settings to block lowballers and save your time.
Don’t know what to buy?
Download our free New Reseller Supply Checklist PDF. It links to the cheapest reliable supplies on Amazon.