Most eBay analytics tools are side features of cross-listing apps. We built Zellerly as a dedicated performance platform — because sellers running real businesses deserve real data.
The resale market is massive. Millions of eBay sellers are running serious businesses — sourcing inventory, managing hundreds of active listings, tracking sales across dozens of categories. And most of them are doing it on spreadsheets or nothing at all.
Existing tools focus on cross-listing — getting items onto multiple platforms. That's useful. But it doesn't tell you what's working, what's stale, what to source next, or whether you're actually on track to hit your income goals.
Zellerly fills that gap. A real analytics platform built specifically for eBay sellers who want to understand and grow their business — not just list more items.
Every feature is built around real eBay API data. No manual entry, no estimates, no guessing. What you see is what your business actually looks like.
We're not building for enterprise warehouses or VC-backed reseller operations. We're building for individual sellers who want to run a better business.
At $14.99/month, Pro costs less than one bad sourcing decision. There's no reason a serious eBay seller shouldn't have access to serious tools.
Zellerly is actively developed. Here's where we are and where we're going.
KPI tracking, equity curve, goal management, and all time period views from daily through all-time.
LIVEDaily trending brands and categories pulled from eBay's live marketplace.
LIVEQuarterly tax estimates, payment countdowns, and 30/60/90-day income projections.
LIVEAI-powered optimal price suggestions based on real sold comps, demand signals, and your own sales velocity.
COMING SOONPredict which categories will be hot next month based on historical eBay seasonal trends.
COMING SOONExpand tracking to Poshmark, Mercari, Depop, and other platforms for sellers who cross-list.
V2 ROADMAPFree to start. No card required. Connect your eBay account in under 2 minutes.