I've discussed the "What's it worth?" question in a podcast. In this article, I cover where End Prices are archived online. There are plenty of options available and with different price points depending on the vendor. Before we dig in, I wanna clarify the distinction between Perceived Market Value and Actual Market Value.
Perceived Market Value: This is the value the seller believes the item is worth. This number isn't likely to be based in reality. Some common influential biases that contribute to these prices include but aren't limited to: The player plays for the seller's favorite team; The seller overpaid for the item and wants to make a profit; The seller believes the player will perform well in the future, etc. Since these factors aren't related to market activity, prices are often way higher (or lower) than they need to be and negotiation can often be challenging. Furthermore, almost all printed price guides feature perceived market values and as such should be treated as sources of information only.
Actual Market Value: This is the end price realized when an item is listed auction style to allow the market to decide the final value. These values are clear indications of what the market is willing to bare for particular items. This allows for actual market value realization and benchmarking. This is the most accurate price guide.
The following is a list of the best places online to find recorded sports card sales.
eBay Completed Sold Listings. This is, by far, the most up-to-date record of current actual market values. These records allow for a nearly real-time review of what people are paying for what in most circumstances. The word 'most' is used because stuff is sold all the time at BINs (Buy It Now) lower than they should be.
www.pwccmarketplace.com. PWCC archives its sales records in a very efficient way. The data is easily searchable with end prices and bid information available for each listing. This is a very helpful reference for vintage and rare card collectors. Membership is required to view sales data.
www.vintagecardprices.com. This is a great site for many reasons. It shows values for cards and their trending patterns up or down. It's a very detailed resource that acts as a helpful reference on market fluctuations with a comprehensive database of past auction listing information. The site focuses on sales of graded cards slabbed by the major grading companies. Membership is required to view sales history.
www.watchcount.com. This site offers the invaluable service of Accepted Offer price identification. Just plug the auction number into Keywords field and hit Enter. It's simple but incredibly helpful when you wanna know the price associated with an accepted offer. Also, while eBay may not always indicate watch count, this site does so you know if others are interested in the respective item.
www.worthpoint.com. This site archives auction listings from auction houses and online marketplaces. This is a great place to search if you're interested in finding an image or to help confirm if something has sold. Membership is required to view sales data.