Card Bullpen is the sports card collection app that works like a front office — scouting talent, valuing it, and making the calls. Scout prospects, identify any card, and decide what to buy, grade, hold, or sell — all in one place.
In active development — launching 2026.
Pictured: an illustrated sample card — a 2024 rookie parallel numbered to 99, graded PSA 10 — with an estimated value of $94 and a watch flag. Illustrative, not a live quote.
There are a hundred places to buy and sell cards. What's missing is the part that helps you decide — which prospect to chase, whether a card's worth the grading fee, what your floor should be when an offer comes in at a show. Today that means juggling a price guide, a checklist site, a pop report (how many copies are graded), sold comps, and a spreadsheet of what you own. Card Bullpen pulls it into one place and does the thinking with you.
Card Bullpen is a sports card collection app that acts as the front office for your cards — one place to scout prospects, identify and value any card against recent comps, decide whether to buy, grade, hold, or sell, and track your collection from shoebox to sold. It's honest by default and launching in 2026, with a free email waitlist open now.
Joining the waitlist is free — leave your email and we'll tell you the day it launches. The app itself launches in 2026 and pricing hasn't been announced yet; the list hears any pricing news before anyone is asked to pay.
Four jobs, one connected operation — each one feeding the next instead of living in a different tab.
Track prospects across baseball, hockey, basketball, football, and soccer — down through the minor-league, college, and junior pipelines. Buy in the pre-breakout window, where the value is. The cards you're watching wait in your Bullpen — your watchlist.
More on scoutingScan a graded slab or a raw card and identify it in seconds — player, year, set, parallel, serial — then see what it's worth against real, recent comps — recent sales of the same card. The equalizer for the sports you don't know as well as the ones you do.
More on player evaluationIs the card worth the grading fee? What's your floor when an offer comes in at the table? Card Bullpen lays out the economics so the call is obvious — and when it isn't sure, it says so, instead of handing you a guess.
More on roster decisionsCatalog your collection, keep its value current, take it to a show, and move it — one connected flow from the moment a card lands with you to the moment it leaves.
More on inventory & salesThe same play, run on a single card — illustrative, not a live quote — from the moment it lands to the call it leads to.
Scan a raw rookie parallel. Card Bullpen identifies it — player, year, set, serial — and files it in your Bullpen.
Raw, recent comps put it around $60. Clean PSA 10s of the same card are selling near $140 — confidence shown, thin comps flagged.
Grading runs about $25. A lift from ~$60 raw to ~$140 graded clears the fee with room to spare — so the call is grade it. When the math doesn't clear, it says hold instead.
Back and slabbed, it lists with a floor and an ask already set — or goes to a show. One flow, end to end.
The call Grade it — the economics clear, and you saw exactly why.
Guided, one-question-at-a-time flows that hide the jargon. Add a card, get a clear read on what it's worth and what to do next — no spreadsheet, no homework required.
Prospect scouting, numbered-parallel tracking, grading economics, and at-the-table negotiation — the decision support a dealer actually uses, with the busywork stripped out.
Here's a sample read — not a real listing — to show how Card Bullpen frames a value instead of throwing one number at you.
A range, not a guess — and when the comps are thin, it says so. Example values; not a live quote. See the grading math.
Card Bullpen launches in 2026. Leave your email and we'll tell you the day it's ready — no spam, no noise.
