Find record collector’s price guides at sites such as Popsike.com and Discogs. These sites allow users to search and browse the prices of records both popular and obscure.
Popsike.com catalogs record sale prices from eBay, one of the major forums for record collectors to buy and sell used records. The site keeps track of all sales of particular records on eBay, allowing users to view results by price or sale date.
Discogs is another record catalog site that allows users to buy and sell used records. Browsing individual record listings, users can see low, high and median prices for records as well as the last date a record was sold on the site.