Online Auction Buying Guides
Start here
The Beginner's Walkthrough
Understand bidding
How Bidding Actually Works
What Is Proxy Bidding?
How maximum bids and automatic bidding work, what happens when bidders compete, and why behavior varies by platform.
ExploreWhat Is a Reserve Price?
The minimum a seller will accept, what “reserve met” and “reserve not met” mean, and how reserves differ from starting bids.
ExploreAuction Terms & Glossary
Plain-English definitions for the words and phrases you'll see on every auction site — searchable and scannable.
ExploreUnderstand the cost
Your Bid Is Not Necessarily Your Total Cost
We never imply a particular premium percentage is standard. See the guide for clearly labeled illustrative examples only.
Buy safely
Recognize Red Flags Before You Pay
Buying by category
Guides for What You're Bidding On
Estate Auctions
Household contents, furniture, collectibles and more from estate sales.
ExploreAntique Auctions
Furniture, art, ceramics and decorative objects — and what to check.
ExploreJewelry Auctions
Estate jewelry, watches and gemstones offered at auction.
ExploreOnline Car Auctions
Public vehicle auctions, government fleet vehicles and salvage.
ExploreGovernment & Surplus
Vehicles, equipment and property from public agencies.
ExploreReal Estate Auctions
Residential, commercial and other real-property auction formats.
ExploreQuick learning path
A Sequence for First-Time Bidders
Ready to Explore Auctions?
Now that you understand the basics, find auctions by category or compare online auction platforms.