Anyone looking for specific stamp information can consult prices on eBay's completed listings page. This free source is especially useful for collectors of foreign stamps because specialized catalogs from other countries can be difficult to find. Use prices shown as a guideline for estimating the value of your collection, evaluating dealer prices, setting up trades with other collectors.
Please note that accessing eBay's completed listings report requires log in to eBay with your user ID and password at www.ebay.com. Only registered users are allowed to use the completed search feature, so you'll have to create an account if you don't already have one.