Early access · launching soon

Sell everywhere.
Oversell nowhere.

Lockstock keeps one source of truth for your cards and syncs it across eBay, TCGplayer, your storefront and the show table. The moment a card sells anywhere, it's gone everywhere — no double-sells, no spreadsheets.

Built by a working card seller · in private early access
Connects to eBay TCGplayer Shopify CardTrader Cardmarket Stripe
The problem

Selling on five places means reconciling five places.

List a card on eBay, TCGplayer and your store, bring it to a show, and you're one slow update away from selling it twice — and eating the refund, the bad review, and the apology. Spreadsheets don't keep up with a real table.

Never oversell

One stock count behind every channel. When a card sells anywhere, every listing updates — or ends — automatically, in seconds.

Vendor mode for shows

Print QR labels, scan a card at the table, take cash or Venmo, and your online stock drops before the buyer walks away.

Smart repricing

Price to the live market automatically, with a floor you set so you're never undercut into a loss.

Built for operators

A plain, fast dashboard that shows what needs doing today. No spreadsheets, no guesswork, no jargon.

Explore every feature →

See it in action

See exactly how it works.

From the dashboard you run your day on to the register you run your table from — here's Lockstock, screen by screen.

The Lockstock dashboard with its sidebar navigation — Dashboard, Inventory, Market movers, Orders, Ship, Show labels, Vendor and Settings — alongside cards sold this week, stock, and orders still to ship.
The whole operation from one screen — every part of the app a click away in the sidebar, with the week's numbers and what needs doing front and centre.
One feed

Every sale, in one place

Sales from eBay, TCGplayer and your own storefront land in a single feed, grouped by order and by day. Mark anything shipped right on the line — and eBay orders clear themselves the moment you ship them on eBay.

The Lockstock sales feed: orders from eBay, TCGplayer and the storefront, each with an inline ship status — 'clears on eBay' or a 'Mark shipped' button.
At the table

Sell in person, in lockstep

Turn an iPad into a register for card shows. Scan a card or tap to add it, take Cash, Venmo, Cash App or PayPal, and your online stock drops the instant the sale is done — so you never oversell what you just sold by hand.

The Lockstock Vendor register: a grid of real cards with photos, prices and Add buttons for selling at a card show.
Your catalog

Every card, every channel

Your whole inventory in one searchable table — price, stock, and exactly where each card is listed: eBay, TCGplayer, your storefront. Filter, sort, and adjust prices or quantities in bulk.

The Lockstock inventory table with card photos, prices, stock levels and per-channel listing tags.
At shows

Print labels, scan to sell

Tag the cards you're bringing and print QR price labels in your label-maker's exact size. At the table, scan a label and the card pops straight into the register — priced and ready to ring up.

The Lockstock Show-labels screen alongside a printed sheet of QR price labels — one per card, each with the card's name, price and a scannable code.
At the table

Your booth, in lockstep.

Turn an iPad into a register. Scan with a Bluetooth scanner or the camera, build a cart, and take the sale — your online listings update the instant it's done.

1Print 2×1 QR labels for the cards you're bringing
2Scan a card — its price comes up instantly
3Take Cash · Venmo · Cash App · PayPal · card
4Stock drops everywhere — no oversell
How it works

Live in an afternoon.

01

Connect your channels

Link eBay, TCGplayer, your storefront and more. Lockstock pulls your live listings in.

02

Import your inventory

Bring your cards in by file or sync. Lockstock matches them to the catalog and prices them.

03

Sell anywhere, synced

List, reprice, and sell — online or in person. One stock count keeps it all honest.