Know the collection. Make the next move.
Capture a card on the floor, bring in purchases and breaks, then keep every piece of the collection connected to its basis, comp, grading path, and sale outcome. Sereal turns the record into a decision — without losing the collector’s view of what matters.
Invites go out in batches · hosted, invite-only
From the first photo to the final sale.
A collection changes at every step: a card gets captured, a purchase comes in, a break is finalized, a comp ages, a slab returns, a listing sells. Sereal keeps those moments in the same operating record, so the next decision has the context behind it.
Bring it in without losing the story behind the cost.
Capture a card when you find it, log a retail or wax run, review eBay purchases before they join the collection, or import a Whatnot break. When one spend creates many cards, Sereal allocates the cost where it belongs — so nothing arrives with a made-up basis.
Grade it, or don’t — with the math.
Before you mail it, Sereal lines up the raw comp against the graded comp at each grade and runs the expected value. Then it gives you a straight answer — and tracks every submission from queued to graded.
In grading: PSA 43·CGC 15·Unset 7
What to move next, ranked.
Sell Desk brings active listings, lots, and realized sales into one loop. The desk surfaces stale listings, trim candidates, and lot candidates — comp beside cost — so your next move is deliberate. Connect eBay and live listings stay checked.
The ones you keep, shown like they matter.
Showcase turns the keepers into a photo-led gallery — graded slabs and key issues front and center, the data tucked behind the image. The part of the hobby that’s just for you, not the spreadsheet.
It sits on a collection you actually maintain.
Every card and comic, its cost basis, and its current comp in one place — value and P&L roll up on the dashboard. The floor the rest stands on, not the pitch.
Cards and comics together — photos, basis, and live comp context on every record.
It stays useful with every paid recommendation turned off. The engine is a layer, not the lock-in.
Your ledger, exportable. Tax summary and eBay CSV out whenever you want them.






Use the phone-first capture flow to save cards in the moment, then review the photo, identity, and comp context before they enter the collection.
Connected purchases land in a review queue while live listings reconcile into Sell Desk and flag when they go stale.
Drop in the Whatnot CSV and a night of breaks reconciles into spots, pulls, and per-card cost basis.
Keep sealed product and hobby spend in the same ledger as singles and breaks — including the boxes that never turn into a card you keep.
Photos, imports, and manual adds meet in one reviewable intake flow, so the collection stays clean without slowing you down.
The vault CSV lands as graded items with certs — duplicates caught by cert number.
Roll every card of a player into one position with a thesis — entry, target, and exit rules you set once.
Pick-your-player, pick-your-team, or random — spot costs allocate onto the cards you actually pulled.
Gem-rate odds and grading fees run against raw and slab comps — before you pay to find out.
A phone-first loadout for the card-show floor — your wishlist, budget, and comps in your pocket.