SportsCardInvestor.com's Geoff Wilson joins the Sports Card Grinders to review the current dip in NBA card prices. Is this a buying opportunity? Plus NFL is back and it appears Sports Card interest is shifting towards football cards. How did price action on these cards react to week 1 performances in the NFL? And the Sports Card Grinders talk about buying raw cards. Where is the best platform to buy raw cards and what do we want to watch out for?