KidCard
CardFlowThe selling side of KidCard

From a shoebox of cards to eBay, without the kids touching eBay.

Kids photograph the cards. CardFlow identifies each one, prices it from real sales, and lists it on the parent's own eBay account. The parent approves the big ones and watches the money. The kid just learns what a rookie card is worth.

Open CardFlowSee what we're selling
White Kyurem EX 103/149 Boundaries Crossed Holo
Front#0142
Upper Deck 2025-26 Series 2 Matthew Schäfer RC (Rare Gold) OPC Glossy GOLD OG-28
Back#0142
eBay listingExample
M Charizard EX Y 13/106 - XY Flashfire Ultra Rare Holo Pokémon Card
$48.00Buy it now · Best offer
Photo-matchedPriced from sales
Parent approved the big hit
Sold · $48.00 → Money
Sign in with eBay · via 0n3eBay Partner Network memberGoogle Drive · PhotosGoogle Sheets · LedgerTwo vision models · IDLive eBay comps · PricingParent approval · Every big hitNo kid accounts on eBaySign in with eBay · via 0n3eBay Partner Network memberGoogle Drive · PhotosGoogle Sheets · LedgerTwo vision models · IDLive eBay comps · PricingParent approval · Every big hitNo kid accounts on eBay
How a card moves

Six stops from phone to sold

The kid does step one. The parent does step four. CardFlow does the rest. Click a stop or let it play.

  1. 1
    Kid snaps front and backKid
    On a phone, in the kid’s own CardFlow sign-in.
  2. 2
    CardFlow identifies it and pulls eBay compsCardFlow
    Player, number, parallel, serial, rookie, condition.
  3. 3
    The rulebook picks auction, buy-it-now or lotCardFlow
    Tiered from the comps, not a guess.
  4. 4
    Big hits wait for the parent’s yesParent
    Nothing valuable lists without a tap from you.
  5. 5
    One tap lists it on the parent’s eBayCardFlow
    Your account, your policies, your photos.
  6. 6
    Sales, fees and holds show up in MoneyParent
    Available, on hold and why, with tracking attached.
1988 Topps - Record Breakers Benito Santiago #7
#0142Front
Two photos. That is the whole job.
For the parent

Identified by AI, checked by you

Two vision models read the front and the back: player, number, parallel, serial, rookie, condition. When they disagree or are unsure, the card goes to your Review queue instead of listing.

Review queue3 waiting
Models disagree on parallel
Refractor vs. X-Fractor · #0142
Review
Big hit · auction Sunday
Comps $140–$210 · needs your yes
Approve
Serial number unreadable
Retake the back · #0139
Retake
Priced from real eBay sales
Live comps by keyword and by photo. The rulebook turns them into a tier: big hits go to a Sunday-night auction that needs your yes, mid cards get a buy-it-now with a best-offer floor, commons gather into team lots.
One tap to list
Item, offer, publish, on your own eBay account, with your policies, your ship-from location and photos served from your Drive. No copy-paste, no eBay forms.
Your money, explained
Available, on hold and why, fees, labels, refunds, promoted-listing spend. Orders sorted by what needs shipping today, tracking attached.
Every listing you already have
Anything you listed straight on eBay, even from the eBay app scanner, shows up in your inventory on the next sync with its photos and price.
Buyer terms that protect you
Every listing carries plain-language terms: photos are the description, priced by software, you are not a grader, no returns, buyer decides. Package sizes and shipping policies set once.
Your photos, your spreadsheet
Cards live as folders in your Google Drive by stage: Inbox, Review, Ready, Listed. A Google Sheet keeps the ledger: listings, lots, sales, fees, net, and what the next box should be.
Sign in with eBay, never a password
You connect eBay once through 0n3, our sign-in hub. CardFlow never sees your eBay password and you can disconnect any time.
CardFlow#0143
M Charizard EX Y 13/106 - XY Flashfire Ultra Rare Holo Pokémon Card
Front ✓Back
Box so far: $212.40
For the kid

Front. Back. Done.

The kid opens CardFlow on a phone, snaps the front, snaps the back, and the card is filed with its own number. That is the whole job.

A PIN, not an email
Kids sign in with a code the parent makes. No email, no Google account, nothing collected about the child.
Never on eBay
Kids never see a buyer, a message or a price argument. Everything public happens under the parent's eBay account, and the parent approves the big cards.
Watch the pile turn into a number
The kid sees which cards sold and what the box made, so opening packs becomes a small business lesson instead of a pile on the floor.

Selling happens on your eBay, not ours

eBay accounts belong to adults and are opened on eBay. CardFlow connects to the one you already have with a single Sign in with eBay, then does the work under it. Your kids never get an eBay account, never talk to a buyer, and never see a stranger. They see their cards and what they sold for.

Open CardFlowCreate a parent account