From a pile of cards to live listings, in one sitting.

C Sort is a desktop app that runs on your machine, drives your own scanner and label printer, and keeps your inventory yours. No cloud lock-in, no per-card babysitting. Every screenshot below is the real app — C Sort runs Aether Inn, our own card store, every day.

Get cards in

Feed your scanner — each card identifies itself (name read off the scan, matched to the card database). Or import a CSV from any collection app. Misreads are flagged, never silently dropped.

Tag condition in seconds

A visual grid of your batch — click cards, hit NM / LP / MP. Multi-select, bulk apply, done. No robot pretending it can grade your cards for you.

C Sort Batches tab: a scanned batch of real cards with conditions tagged NM — The Batches tab — a real imported batch, conditions tagged in two clicks.

One dial prices everything

Every card gets its own price from live market medians (Scryfall market + Card Kingdom retail). You set one catalog-wide margin — the app computes each card's price, enforces a $1-net-profit floor, and auto-routes true bulk into bulk-box lots instead of penny listings.

C Sort Pricing tab: one catalog-wide margin slider with market-source readouts — The Pricing tab — one slider, whole catalog. Release to preview, Update to commit.

Listed on eBay + Shopify, synced

Both platforms included. Inventory stays matched — a sale on one side decrements the other. Your listings, your seller account, your reputation — C Sort is the automation, not a middleman.

Ship without fighting your printer

Drop the shipping label (PDF, JPG, or PNG) onto the app — it prints to your thermal label printer, barcode-safe, no driver fights.

C Sort Fulfillment tab: drag-and-drop zone that prints shipping labels straight to a thermal printer — The Fulfillment tab — drop eBay/Shopify's label file, it prints as a clean 4×6.

What's in the box

Scanner intake + CSV import

Drive an Epson document scanner directly, or import from any collection app's CSV. Both land in the same batch grid.

Condition tagging grid

Multi-select cards and bulk-apply NM / LP / MP. Flat, predictable condition pricing — LP −5%, MP −10%.

Market-median pricing

Each card priced off its own live median across sources. One margin dial for the whole catalog — no per-card price screens.

The $1-profit floor

Cards that can't clear $1 net after fees get held and flagged, never force-listed at a loss. True bulk auto-routes into bulk-box lots.

eBay + Shopify, both included

List and sync to both from one place, on your own seller accounts. One tier, no platform upsell.

Label printing that just works

PDF, JPG, or PNG label files render to your thermal printer barcode-safe — letterboxed, never cropped.

Your data stays local

Inventory lives in a local database on your PC — rebuildable from your live listings if the machine dies.

Built for MTG

Card identification, price sources, and bulk rules are all built for Magic: The Gathering singles — because that's what we sell too.

Fair questions

Does C Sort touch my money?: Never. Sales settle directly between you and eBay/Shopify. C Sort bills you $25/mo for the software — that's the only money it ever handles.
Where does my inventory data live?: On your machine, in a local database. Rebuildable from your live listings if your PC dies.
What hardware do I need?: Any Windows PC. Scanner and thermal label printer optional — CSV import and normal printing work without them.
Do I need my own eBay/Shopify API keys?: No. You sign in to your accounts once through the standard consent screens — no developer accounts, no keys to paste.