About

A sports card front office, not a bazaar.

Q: What will Card Bullpen cost?

There is no public pricing until launch in 2026. We will not publish plans or dollar prices on the site before then. Joining the waitlist is free and there's no commitment; the list hears any pricing news before anyone is asked to pay.

I started Card Bullpen the way good tools get started — as a collector trying to solve my own problem. The hobby is full of places to trade; it's short on something to help you decide. This is that something.

Get the call when we launch Meet the founder

Free email waitlist · launch news only · 2026

Brand photography · Scout. Value. Decide.

Meet the GM

A collector first, a founder second.

Who built Card Bullpen? Mark Murphy — lifelong collector and solo founder. Building it solo means it ships when it's right, and there's no support queue between you and the person who built it.

I'm Mark Murphy — a lifelong collector and the solo founder of Card Bullpen. I've been the guy at the show working a deal with a price guide in one hand, sold comps in the other, and a gut feeling doing the math. That's a bad way to make a real-money call, and I made plenty of them that way.

Card Bullpen is the tool I wanted at the table — a front office for one. Building it solo means it ships when it's right, not when a deadline says so. It also means there's no support queue between us: write to [email protected] and the founder is the one who answers.

Why we built it

The story behind the front office.

Origin

I built Card Bullpen the way a lot of good tools get built: as a collector trying to solve my own problem. The hobby is full of places to buy and sell cards. What it's short on is something to help you decide — which prospect is worth chasing, whether a slab is worth the grading fee, what your floor should be when an offer comes in at a show. Walk the floors and the table in the show-day checklist. For me that meant juggling a price guide, a checklist site, a pop report, sold comps, and a spreadsheet of what I already owned. Card Bullpen pulls all of that into one place and runs it like a front office — scouting, valuation, and roster decisions under one roof — so the call is clear instead of a hunch.

See the four departments

The whole journey

Most tools pick a lane: simple enough for a beginner but shallow, or powerful for a dealer but impenetrable to everyone else. Card Bullpen is built to span the whole range — a guided, plain-language experience for someone just getting started, with the depth a serious collector or dealer needs sitting one tap away when they want it. One front office that grows with you, instead of a tool you outgrow.

Honest by design

The one thing we won't do is fake a number. A grade estimate comes as a range with its confidence shown. A value with no real comp behind it says so plainly. We'd rather tell you we're not sure than cost you money with false precision — because trust is the whole point of a tool you lean on to make decisions. In this hobby a wrong number is real money, so honesty isn't a feature here; it's the default. Walk the method in how to value a sports card.

Design mock: CONFIRM call when sold comps are thin — range shown, no fake precision. — When comps are thin, we say so

What's next

Card Bullpen is in active development, launching in 2026. We're building the scouting, the identification, the decision support, and the collect-to-sell lifecycle into one app — and getting each piece right before it ships. If you want to be in the front office on day one, the waitlist is open.

— Mark

Where it's headed

The plan, in three phases.

No vapor and no hard promises — just the order we're building in.

In build
The four departments — scouting, evaluation, decisions, and inventory — coming together into one app.
At launch · 2026
Scout, identify, value, and make the buy-grade-hold-sell call — end to end, in one place.
After
Kept honest and current as the market moves. We'd rather ship it right than ship it loud.

Questions

Straight answers, by a collector.

Is Card Bullpen a marketplace?

No. There are already a hundred places to buy and sell — Card Bullpen is the part that's missing: the front office that helps you decide. It scouts, values, and works the buy-grade-hold-sell math, then you take that call wherever you trade.

Which sports does it cover?

Baseball, hockey, basketball, football, and soccer — including the minor-league, college, and junior pipelines, not just the big-league stars. The lookup is built to identify cards across all of them, so the sport you follow less closely isn't a blind spot.

Why won't it just show me one number?

Because a single number pretends to a certainty the market doesn't have. A card's worth is a range, set by real recent comps and the grade, so that's what you see — a floor, an ask, and an estimate with its confidence shown. When the comps are thin, it tells you, instead of faking precision that could cost you money.

Do I need to know the hobby to get value out of it?

No. New collectors get guided, plain-language flows that hide the jargon and just tell you what a card's worth and what to do next. The depth a serious collector or dealer wants is always one tap away — it doesn't get in your way until you ask for it.

Does it work for raw cards, or just graded slabs?

Both. Scan a raw card or a graded slab and it's identified the same way — player, year, set, parallel, serial — then valued against real, recent comps. Raw or slabbed, you get a read and a recommended next move. New to these terms? The collector glossary has plain-language definitions.

Is grading worth it for my card?

That's exactly the call Card Bullpen is built to make. It weighs the grading fee against the lift a higher grade is likely to add, using real comps — and when the math doesn't clear, it tells you to skip it, instead of dressing up a guess as a fact. You can walk the grading math yourself first.

What will Card Bullpen cost?

There is no public pricing until launch in 2026 — no plans or dollar prices on this site until then. Joining the waitlist is free and there's no commitment; the list hears any pricing news before anyone is asked to pay. Details: pricing stance.

When can I use it?

Card Bullpen is in active development, launching in 2026. We're building the scouting, identification, decision support, and collect-to-sell lifecycle into one app, and getting each piece right before it ships. Get the call when we launch and we'll tell you the moment it's ready.

Still have a question? Email me — straight answer, no script.

Launch call · free waitlist

Get the call when we launch.

Card Bullpen launches in 2026. Leave your email and we'll tell you the day it's ready — no spam, no noise.

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