He's 12. But he's quite knowledgeable when it comes to sourcing and pricing cards online and those between a graded and non-graded card.
Top calibre meaning high rated players' Young Guns or Rookie Cards (ie. Jack Hughes). Cards that are at least a few hundred dollars each.
Just thinking to back in the late 80s and early 90s, you put your card in a hard sleeve or one of those screw-on cases for your better cards. Nowadays it seems the value lies more if the card is graded than just pulled and put in a hard sleeve.