LT Rookie card

2005 I was up at my grandparents house and I took a walk to a local hobby shop. I picked up a Pack of 2001 football cards the price was one dollar. I open it and inside I found a LaDainian Thomlinson rookie card with a piece of the football in his rookie shoot that he is holding in his shoot. It also had the brand name on the piece of football that pumped up the value alot. So I think I got a good deal right?