Posted By:
JasonI think it would be a great tool for type card collectors or high end cards of popular sets.
Its not just the past prices but you can also get an idea of how often cards come up for auction.
That said, I don't subscribe to the service but I only collect T205's in specific grades and I know what they cost. Of course, I have taken advantage of the one day subscription (nice touch btw) to get a look at a couple values of cards when I'm unsure.