As a starting point, I use an old copy of the Sports Collectors Digest to get a sense of raw card pricing. My guide is a bit old, so I then cross reference it with eBay completed sales to get an accurate impression of the current market for raw and graded cards. I chase after some seldom seen cards, so it helps to have the raw price guide to get a sense of whether the 1 or 2 completed sales are anomalies or within what I consider an appropriate range.
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