Run your collectible business from one place.
Buy smarter. Price with confidence. Manage inventory. Build trades. Make the margin before you make the deal.
Inventory
Live$0
Inventory value
$0
Cost basis
+34.6%
Unrealised margin
27d
Avg days held
Charizard Holo
Base Set · 1999 · NM
Alakazam ex RR
Shiny Treasure ex · JP
Destined Rivals ETB
Sealed · ×4
Umbreon VMAX
Evolving Skies · PSA 9
One system. Whatever you collect.
Your inventory may change. The fundamentals don't. Know what you've got, what it's worth, what you paid and what you can afford to offer.
- Trading Cards
- Sports Cards
- LEGO
- Miniatures
- Comics
- Figures
- Memorabilia
Know the deal before you make it.
Buy
Know the maximum price you can pay while protecting your margin.
Sell
Price inventory using market data, cost basis and your target margin.
Trade
Build both sides of the deal and immediately see your real exposure, profit and ROI.
Track
Every purchase, sale and trade automatically updates your inventory and cost basis.
Trade builder
LiveComing in — their items
- Moonbreon PSA 10$1,420
- Sealed Evolving Skies BB$640
- Mixed modern lot ×22$310
Going out — our inventory
- Charizard Holo NM$1,860
- Cash difference$36
$0
Expected profit
+88%
Expected ROI
80%
Buy percentage
Inventory
Everything you own. Everything you paid.
One list for singles, sealed and graded. Cost basis, market value and margin sit side by side, so you always know what's working and what's sitting.
- Cost basis
- Market value
- Margin
- Acquired
- Days held
- Source
- Condition
- Category
- Owner
- Confidence
Inventory
Live$0
Inventory value
$0
Cost basis
+34.6%
Unrealised margin
27d
Avg days held
Charizard Holo
Base Set · 1999 · NM
Alakazam ex RR
Shiny Treasure ex · JP
Destined Rivals ETB
Sealed · ×4
Umbreon VMAX
Evolving Skies · PSA 9
Market pricing
Market context without twenty tabs open.
Cardinal pulls sold comps, marketplace quotes and your own sale history into one estimate with a confidence rating. It's there to help you decide, not to decide for you — override it whenever your read is better.
- Recent sales
- Pricing sources
- Confidence
- History
- % of market
- Manual override
Item · Charizard Holo
LiveEstimated market value
$1,860
- eBay sold comps$1,842
- TCGplayer market$1,905
- Trade Me live$1,790
- Manual override—
Recent sales · 90 days
+4.2%
30d trend
46
Sales vol.
$1,302
We pay @70%
Trade Builder
Turn complicated trades into simple maths.
Put their pile on one side, yours on the other. Cardinal recalculates every time something moves — cash difference, buy percentage, cost basis, expected profit and ROI.
- Their items
- Your inventory
- Cash difference
- Buy %
- Cost basis
- Profit
- ROI
Trade builder
LiveComing in — their items
- Moonbreon PSA 10$1,420
- Sealed Evolving Skies BB$640
- Mixed modern lot ×22$310
Going out — our inventory
- Charizard Holo NM$1,860
- Cash difference$36
$0
Expected profit
+88%
Expected ROI
80%
Buy percentage
Point of sale
From deal to inventory in seconds.
Take cash, card, bank transfer or trade credit — or split it however the customer wants. The sale, the fees and the inventory update happen together.
- Buy
- Sell
- Trade
- Split payment
- Inventory update
Point of sale
LiveBasket · 3 items
- Charizard Holo NM$1,860
- Alakazam ex RR$148
- Destined Rivals ETB$78
Scan to pay the balance
Inventory updates on capture
Built for the table, not just the back office.
Cardinal is designed for the moment someone puts a collection in front of you and asks, "What can you do?"

Less spreadsheet. More dealing.
- 01
Scan / Search
Find the item.
- 02
Value
See the market.
- 03
Offer
Apply your buying rules.
- 04
Trade
Add your inventory or cash.
- 05
Commit
Know the profit before saying yes.
- 06
Track
Inventory updates automatically.
The hobby is fun. Your margins still matter.
Understand where your money is sitting, what is moving and what is actually making you money.
- Revenue
- Inventory value
- Cost basis
- Gross profit
- Avg buy %
- Avg margin
- Inventory age
- Expected ROI
- Capital deployed
- Top categories
- Slow movers
Dashboard
Live$0
Revenue (90d)
$0
Gross profit
$0
Capital deployed
68.4%
Avg buy %
Inventory value by month
Top categories
- Graded singles82%
- Sealed61%
- Japanese47%
- Vintage33%
Built by people who actually buy, sell and trade.
Cardinal started because we wanted better tools for running our own collectible business. We wanted to know what we owned, what we'd paid, what it was worth and whether a deal made sense before shaking hands.
Your numbers stay yours
Cost basis, margins and customer detail never leave your environment.
Every category, one workflow
Singles, sealed, graded, lots — same buying rules, same reporting.
Your own environment
Each vendor gets their own Cardinal workspace, spun up when you join.