For many collectors, finding accurate information and prices can be a guessing game. Kovels.com has put together a list of 4 of the best free sources to help you learn about and determine the value of your pieces:

• eBay is a good resource for finding quick prices, although they may be less accurate. Since only about a third of the antiques up for auction on eBay actually sell, only a third of the prices represent auction market value. And, unfortunately, many sellers don’t have enough information to correctly describe their items.

• Large web malls (think TIAS and Ruby Lane) sell antiques at retail prices, so be aware that auction and flea market prices will be lower. Sites like these are easy to navigate, with items organized by category and price range.

• Auction house aggregators like LiveAuctioneers and Proxibid host auctions that run 24/7. Most of the auctions are posted by established antique galleries that have experts who understand the items they are selling. Searching on these sites is more complicated and time-consuming but, on the upside, the sites link you to recent sales and actual prices. Keep in mind that prices may not include buyer’s premiums (up to 20 percent or more) and taxes.

• And of course, our favorite, Kovels.com provides accurate prices reviewed by experts who have studied prices at auctions, shows, flea markets and online. The site is constantly reviewed, giving users concise and trustworthy information. Prices are dated and the archives are easy to navigate.