There are collectors, and then there are consumers.
When the boys were young the youngest's favorite part of Slot cars was crashing, I had to remove the chicanes because he would just park there and wait...
Anyway, I spent a long time looking for an Eldon Demolition Derby set. When I finally found one it was an un-opened, sealed in plastic set. I had to force myself to pass on it.
I eventually found enough pieces to build two cars, but never the correct track.