How to Track Your eBay Sales and Profits, the Easy Way

It’s pretty simple. You bought something. You sold it. You made money, or you didn’t. But the details add up fast. There are platform fees to account for, shipping costs, the price of poly mailers and boxes, the occasional return, the item that sat for three months before you dropped the price. If you’re just watching money come in without accounting for everything going out, your mental math on profitability is almost certainly off.

This isn’t a warning to scare you. Most beginner resellers are profitable once they’ve got a handle on sourcing. But “most” isn’t all, and the ones who realize they’ve been bleeding margin on a category they like but that doesn’t actually pay are usually the ones who weren’t keeping records. They find out late.

The other reason to track from day one is less obvious: data compounds. The longer you’ve been recording your sales, the more data you have, and the more clearly you can see patterns, trends, and opportunities. Resellers who have twelve months of tracked sales can make decisions that resellers flying blind simply cannot. More on that in a moment.

You do not need specialized software to get started. A basic Google Sheets spreadsheet is free, works on any device, and is completely sufficient for most resellers in their first year (and beyond).

We built a free template you can use right now. The RC Reseller Profit Tracker includes an Inventory Log with auto-calculated profit, a Monthly Summary tab that updates as you fill in sales, and a platform fee reference guide. Open it and go to File > Make a Copy to save your own editable version. Make sure you check the “How to Use” tab at the bottom for a quick tutorial.

If you don’t have a Google or account or prefer not to use one, you can still download the .xlsx file and use it on any spreadsheet app.

And if you’re a stubborn type that prefers pen and paper or just building your own spreadsheets, your profit tracker should include (at a minimum) the item’s name, what you paid for it, what you sold it for, shipping and platform fees, and the date you sold it.

That’s it. Six or seven columns. If you’re doing this consistently, even a messy spreadsheet will tell you things a clean mental estimate never will.

A few practical tips for keeping it up. Log purchases the day you make them, not when the item sells. If you wait, you’ll forget what you paid or lose the receipt. Keep a running “active inventory” tab separate from a “sold” tab so you can see at a glance what’s still sitting and for how long. And don’t skip the fees column. eBay takes roughly 13% of your final sale price including payment processing. If you’re mentally calculating profit without accounting for that, every number you’re running is too high.

Once you’re moving consistent volume on eBay, the platform’s own tools become genuinely useful. eBay’s Seller Hub is available to all sellers and provides a dashboard covering recent sales, traffic data, and listing performance.

The “Performance” tab within Seller Hub shows your sales totals over time, average sale price, and how your listings are performing in search. The “Research” tab, which is available in a more limited form for free and more fully through eBay’s Terapeak subscription, lets you look up historical sold data on specific products and categories. This is useful both for pricing and for evaluating whether a category is worth pursuing in the first place.

As your operation grows, dedicated reseller software can save time and reduce errors. A few options worth knowing:

Flyp is a consignment app that also includes tracking features, though it’s primarily aimed at resellers who want to outsource listing. Reseller Assistant and similar apps are built specifically for multi-platform resellers and connect directly to eBay, Poshmark, and Mercari to pull sale data automatically. InventoryLab is more tailored to Amazon sellers but has broad utility for anyone doing high-volume retail arbitrage.

None of these are necessary when you’re starting out. The cost is only justified once manual tracking is genuinely taking more time than the subscription would save. For most resellers, that threshold is somewhere in the range of thirty to fifty transactions per month. Below that, a spreadsheet is almost always the right call.

Here’s where tracking stops being about record-keeping and starts being about making better decisions.

After a few months of consistent data, you have something most early-stage resellers don’t: a real picture of your business. And that picture is usually more interesting and more uneven than it feels day to day.

Some resellers look at six months of data and discover that one product category is generating the majority of their profit despite representing only a quarter of their sales volume. Others find the opposite: they’ve been spending a lot of energy on a category that feels active and fun but that’s barely breaking even once fees and shipping are factored in. Some discover that their real income comes from a handful of high-ticket items while the bulk of their lower-priced volume is essentially busy work. Others find that flipping inexpensive items en masse is where all their margin actually lives.