avanton Cockpit · eBay management for sellers

eBay management software for sellers with multiple accounts

We run four eBay accounts from one window.
So can you.

Prices, competing listings, buyer messages and fees across all your accounts in one place — on your own server, with your own eBay access.

Why we built it

We have been selling on eBay since 2003, now across four accounts. Past a certain number of listings, the eBay portal stops being a place you can work in.

  • Four accounts mean four logins, four inboxes and the same question four times.
  • Checking a price means searching the portal, looking at the listing next door and typing it back in.
  • What an item actually leaves you after final value fee, ad costs and shipping is written down nowhere.
  • Slow movers only show up when you go looking for them.

What it does

The scope an eBay business actually needs — and nothing that only looks good on a feature list.

Prices

  • All listings from all accounts in one list, duplicates grouped together
  • A price suggestion per item with its reasoning — calculated overnight, ready to review in the morning
  • Real competitor prices from eBay search, with your own listings filtered out
  • Rules with a floor and a ceiling: what should never get cheaper never does
  • Change selected listings together

Buyer messages

  • One inbox for all accounts, real buyers separated from eBay system messages
  • Reply to the buyer straight from the Cockpit
  • Where eBay blocks sending through its API, the Cockpit says so and has the text ready to copy — instead of pretending the reply went out
  • “Open” means unanswered, not unread — that is the backlog that counts
  • Accept, decline or counter buyers’ Best Offers

Money

  • Fees per order from eBay’s financial data, not estimated
  • Contribution margin per item after purchase price, fees and shipping
  • Slow movers by time listed, with a suggestion to relist
  • Monthly eBay invoices collected per account, as a table for your accountant

Listing and upkeep

  • New listings with category, item specifics and business policies — with a dry run before they go live
  • Title and description suggestions by AI, if you want them
  • Manage shipping and return policies
  • Print labels, import items from CSV

You stay in control

A tool that can change your selling prices has to explain when it does.

Nothing changes on its own

Rules and the pricing engine produce suggestions and a notification. The only way to eBay is your click. The overnight run does not write anything either.

Your eBay access, not ours

You register your own developer access: your own authorisation, your own limits, your own responsibility. We cannot get into your eBay account.

Buyer data stays with you

Names, messages and orders live on your server. They do not pass through us, and they do not sit in a cloud next to other sellers’ data.

AI only with your own key

Price, title and description suggestions run on a key you provide. Without it, the Cockpit keeps working without AI.

Your machine, our setup

The complete solution runs on your server — set up, maintained and updated by us. No shared access, no cloud full of other sellers.

No Windows, no licences

Linux, Node and PostgreSQL. All free, nothing expires.

Modest requirements

2 cores, 4 GB RAM, 40 GB SSD, your own domain with HTTPS. No server cabinet.

Off-site backup

Encrypted nightly, retention as agreed, restores tested monthly.

Monitored

Uptime, overnight runs and backup age feed into our monitoring — we notice before you do.

eBay access in view

eBay’s authorisation expires after 18 months. The Cockpit warns you beforehand instead of stopping one morning.

Updates from us

Including when eBay changes its APIs again. That is part of maintenance.

Tailored to you

Accounts, rules, price limits, labels, email texts, columns. Your installation, your settings.

Extensions by arrangement

If something is missing, let’s talk. What we build becomes part of the product — you get it, and with the next update everyone else does too.

Handbook included

No tool without instructions. The handbook lives inside the application — currently in German.

Passkey sign-in

Passkeys or two-factor, roles per user, separate logins for your staff.

Remote support only on request

We only get in when you generate a support code. Visible notice during the session, logged, disconnectable at any time.

Your data belongs to you

Full export at any time. If you leave, you take everything with you, and the installation keeps running on your server.

What it deliberately is not

We would rather tell you up front what is missing than surprise you with it after you buy.

  • Not in English yet. The Cockpit’s interface and handbook are currently German-only. Enquiries in English are welcome.
  • Built and in daily use on eBay Germany (ebay.de). Other eBay sites on request.
  • Not an inventory management system. No invoices, no accounting, no stock — that is what avanton Wawi is for (in German).
  • eBay only. No Amazon, no other marketplaces, no web shop.
  • You need your own eBay developer account. We guide you through the application; you sign it yourself.
  • It does not change prices on its own. If you are looking for full automation, this is not it.
  • One account is enough — but the benefit grows with every additional one.
  • If you only list occasionally and don’t want your own server, listingfuchs.de will serve you better (in German). The Cockpit is for people who work with it every day.
  • Customisation is by arrangement, not magic. What fits the Cockpit’s workflow, we build in. Turning it into a second piece of software is a separate project.

How it starts

01 — Conversation

Is it a fit?

One hour: how many accounts, how many listings, how you manage prices today. And the hard question first — do you have a Linux server with your own domain? If not, we sort that out before going any further.

02 — Access

Your eBay authorisation

Apply for developer access, then connect account by account. Each in a fresh private browser window, each with a name check — otherwise every authorisation ends up tied to the same account.

03 — Setup

Server and first sync

Machine, certificate, listings imported, purchase prices added, rules discussed and left switched off.

04 — Shadow mode

Watch first, then switch on

At first the Cockpit only shows you things. You switch on the rules once you trust the suggestions — not before.

Is this right for your eBay business?

Tell us briefly how many accounts and listings you sell through. We will reply with an honest assessment — even if it is “probably not”.

hallo@avanton.de

Pricing on request — one-off setup including data import, then maintenance and updates as a monthly fee.