Trading card guides

How to value a card, decide whether grading pays, track what a collection is worth, and sell without losing the gain to fees.

Find your Pokémon card's value in under a minute. Read the set symbol and card number, match the exact print, then check raw and graded prices.

Scan a Pokémon card with your phone to identify the exact print and pull live prices. What scanners get right, where they fail, and how to verify.

Grading pays off when the graded price minus fees beats the raw price. Here is the break-even maths, plus the flaws that stop a card hitting a 10.

A PSA 10 often sells for three to ten times a PSA 9. Here is what causes the gap, when it is widest, and how to judge which grade a card will get.

Log every card once, attach the print and condition, then let prices update automatically. How to track a collection without a spreadsheet.

Price against sold comps, describe the exact print and condition, ship in a rigid mailer, and check the fee take before you list anywhere.

Read the rarity symbol, the set size, and the variant. What the circle, diamond and star mean, and why rare does not always mean valuable.

Counterfeits fail on texture, the blue core layer, font weight and back colour. Seven checks you can run in under a minute without tools.

One Piece card prices hinge on rarity tier, alternate art, and tournament play. How to read the codes and check what a card is worth.

Sleeve, toploader or semi-rigid, then a sealed box away from light and humidity. What actually damages cards, and what to do for high-value ones.

Grading fees run from around $25 to several hundred per card depending on tier and declared value. What drives the price, plus the hidden costs.

Lorcana prices hinge on enchanted rarity, first-print chapters, and playability. How to read the rarity icons and check what a card is worth.

Yu-Gi-Oh! prices depend on rarity treatment, first edition versus unlimited, and tournament demand. How to read the set code and price a card.

Sort by value first, then by set. A system that keeps bulk out of the way, protects the cards that matter, and makes anything findable.

CardBoom covers Pokémon, One Piece, Yu-Gi-Oh!, Magic: The Gathering, Lorcana, Digimon, Dragon Ball Super, Union Arena.