Posted By:
Eric BrehmJames -- I'm not sure what price guide web sites you are referring to. The only one I am familiar with, vintagecardprices.com (VCP), publishes eBay sales results practically instantaneously, and auction house results (REA, Mastro, etc.) within days at most after the auction ends. So if there is a sale of a particular card in one of those venues, you will see it on VCP essentially right away. Do I understand your question?