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Tools tour

Collector tools that do the math.

Everything a member gets, shown with the real screens. Built by a collector, for working out what you have, what it's worth and what to buy next.

See membershipRip a free pack first

Members

Your collection, in one place

Add each card with its set, number, condition, how many you have and what you paid. Known cards fill in their own names.

  • Your dashboard shows value, completion and your top cards at a glance.
  • Mark cards for grading and follow them through.
  • Share a public collection page if you want to.
The My Cards screen with a sample collection

Members

Every GPK checklist

91 sets and 10,148 cards, from the 1985 originals to the newest themed sets. Tick what you have and see what's missing.

  • a and b cards, parallels and checklist notes.
  • One click to search a missing card.
The GPK Library with sets and checklists

Members

Know what's rare

Odds, print runs and versions for each set, with the source for every number. So you know a Moby Dick Gray from a Booger Green before you pay for one.

The Rarity Guide with odds for each version

Members

Should I buy this box?

Put in the asking price, shipping and tax. It shows the total cost against three ways to get your money back: keep it sealed, sell the packs or sell the cards, after the selling fee.

It's math on guide prices, not a promise of what anything will sell for.

The Should I buy this? calculator with a box filled in

Members

Is grading worth it?

Compare a card's ungraded price with graded prices, minus the grading fee and the selling fee, so you only send the cards that pay.

Free for everyone: the grading guide explains centering, corners and what graders look for.

The grading calculator

Members

Wax, boxes and your buy list

Track the sealed boxes you have and want, with typical prices, and keep a buy list so you don't pay twice for the same thing.

Wax & Boxes, tracking sealed products

Members

Your numbers

Value by series, completion, price bands and your best cards, plus Finance & ROI: what you spent against what it's worth.

Analytics charts for a sample collection

Free for everyone

Ready to dig in?

Membership pricing is announced at launch. Join the VIP list and you'll hear first.

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Tools tour | Boom Card Club