What I'm going to turn down is "yard sale" stuff. Yeah, some of it may be collectible, but it probably belongs in an antiques-only venue. I may change my mind (on a lot of things), but sports cards are definitely invited. In fact, I had a phone meeting with a card grading service to have them come to my show. Not sure if they grade on site or just receive cards to be graded back at the home office. Hope to get at least the top 2 of those folks there. We'll see.