Research Basics: How to Find What Something Is Worth
A practical introduction to researching items — from online databases and auction records to reference books and sold listings. Learn the core skills every buyer and seller needs.
Practical, downloadable guides for everyday buyers and sellers. Each guide is written to be kept, referenced, and used — not read once and forgotten.
Guides in development — enter your email on any card to be notified when it's ready.
16 planned guides
A practical introduction to researching items — from online databases and auction records to reference books and sold listings. Learn the core skills every buyer and seller needs.
Completed sales data is the most reliable pricing signal available. This guide teaches you how to find it, read it, and use it to make smarter decisions.
How to prepare before you go, what to look for when you arrive, how to research on-site, and how to decide what's worth buying.
Strategies for shopping thrift stores efficiently — what categories to focus on, how to spot quality, and how to avoid common mistakes.
How to evaluate listings, spot red flags, research sellers, and buy with confidence across online resale platforms.
A step-by-step guide to researching comparable sales, understanding condition grades, and setting prices that are fair, competitive, and profitable.
Lighting, backgrounds, angles, and editing basics — everything you need to take photos that accurately represent your items and attract buyers.
How to write honest, accurate, and compelling item descriptions — including condition notes, measurements, and the details buyers actually want to know.
A practical guide to identifying and researching hallmarks on gold, silver, and platinum jewelry — including country marks, date letters, and maker's stamps.
How to identify metal types, test for authenticity, and understand the basics of gemstones in vintage and antique jewelry.
How to research artists, distinguish prints from originals, understand signatures and provenance, and navigate the basics of the secondary art market.
A guide to Depression glass, carnival glass, art glass, and other collectible glassware — including pattern identification, color names, and research resources.
Understand the coin grading scale, identify key dates and mint marks, and learn how to research numismatic value using standard references.
Everything a reseller needs to know about photographing items for sale — from natural light setups to simple editing workflows.
How to find estate sales, prepare before you go, research on-site, negotiate, and evaluate what you've bought — from first visit to final decision.
A complete guide to using Facebook Marketplace safely and successfully — finding deals, evaluating sellers, writing listings, and avoiding scams.
Enter your email on any guide card above, or use the contact form to get on the list. We'll let you know as guides become available — individually and as part of membership.