It can be very interesting to see adults and kids reactions

I was going to pick up a big big box of Stecks from a teenager. I had to talk to him over the course of a month or so as he thought I was so weird I must be dangerous. He even had me talk to his parents to check me out. When I finally went to pick up the box and I started sorting it and saying "oh this is from set 3666 and this is from etc....." he really started to show signs of concern, and he backed away from me

It helped in the financial negotiations though

Are you really selling these treasures? I could use about a dozen of each set and even then I would want more for dioramas and play.