Spreadsheets get you started. They won’t get you scaled.
Quick answer. Use a card-specific platform such as BinderPOS, TCG Sync, Crystal Commerce or Storepass. They handle card-level detail — scanning, live pricing, buylists and marketplace syncing — that generic retail tools can’t, giving you one accurate record of what you own, what it cost and its price.
Before we talk about which system, it’s worth being clear on why stock management matters so much for a card business — because it’s different from most retail.
Why stock has to be managed properly
A TCG business can hold tens of thousands of individual SKUs, each with its own condition, set, rarity and constantly moving price. If you don’t manage that tightly, three things happen: you lose track of what you actually own, you price inconsistently across channels, and you have no idea what your true margin is. Good stock management gives you accurate cost of goods sold, protects you against shrinkage and loss, keeps your prices current, and — crucially for VAT — gives you the purchase-and-sale records the Margin Scheme demands.
How it needs to work
The core of a card business is a single source of truth: one place that holds every item, its cost, its condition and its price, and pushes that inventory out to every channel you sell on — your website, live streams and marketplaces — syncing back automatically when something sells so you never double-sell the same card.
The systems built for this
General retail tools struggle with card-level detail, which is why sector-specific platforms exist. The main names are BinderPOS, Crystal Commerce, TCG Sync and Storepass. They’re built around the realities of a card shop: card scanning, automated pricing that tracks market rates, a buylist tool for buying cards in from customers, pre-loaded catalogues for Pokémon, Magic, Yu-Gi-Oh!, One Piece and the rest, and one-click syncing to marketplaces and a Shopify storefront.
- A physical shop or serious online store: a full POS-and-inventory platform (BinderPOS, TCG Sync, Crystal Commerce, Storepass) usually earns its keep.
- Live-selling on Whatnot only: you may not need a full platform yet — but you still need a disciplined record of cost per item for VAT and margin.
- A market-stall or convention seller: a lighter inventory tool that tracks singles, sealed, slabs, costs and quantities is often enough to start.
What these systems don’t track: landed cost
Worth knowing before you commit: the card-specific platforms record a cost or buy price per card, but none of them apportion your inbound shipping and duty across stock as a true landed cost — that isn’t what they’re built for, and Shopify’s and Xero’s basic inventory don’t do it either. If you import stock in volume and landed cost is material, that feature lives in a dedicated inventory system such as Cin7, Unleashed or Zoho Inventory, which sits underneath your setup and feeds costed figures through. For most card businesses that’s overkill — a periodic allocation of freight and duty at month end does the job (see the stock-valuation guide).
Whichever you choose, the test is the same: does it tell you, at any moment, what you own, what it cost, and what it’s worth? If the answer is yes, your accounts, your pricing and your VAT all get easier.
