From your list, the CCE carts harder to find locally (in Brazil) are Pizza Chef and Radar. I don't know about CCE's Space Tunnel, but it looks to be not so common. Frogger, Crackpots and Bobby is Going Home carts seems to be much easier to find.
The really rare CCE carts are the ones with yellow label (C-10## series), like this one (image from my site):
Best regards,
Sergio