Guide library

Collecting & reselling guides

Clear, practical how-tos for collectors, researchers, thrift shoppers and resellers, from grading decisions to thrift-store sourcing.

7 guides

Counterfeit Pokémon cards are common at flea markets and online. Use this checklist to protect your money before you buy singles or bulk lots.

Condition is value. Learn the right sleeves, holders and storage habits to keep cards in the shape you bought them.

Asking prices are wishes. Sold prices are data. Here's a simple, repeatable way to look up what an item really sells for before you spend a dollar.

A sale price is not your profit. Learn which costs quietly eat your margin and how to calculate the number that actually lands in your pocket.

Grading can add value, or it can quietly lose you money. Here's a practical framework for deciding whether a card is worth submitting.

Rookies, parallels, serial numbers and autographs: a plain-English introduction to how modern sports cards work.

A beginner-friendly game plan for thrift stores, garage sales and estate sales, plus how to check whether an item is worth buying.