Do you want the rear of zoom Mezmerizer? I have one in LA. You mount it onto the back of a 35 format zoom like the 20-100 or 25-250 Cooke.
It distorts the picture and makes an effect like you are on LSD or PMS, both very dangerous.
Figure about $ 4,000 for the unit and another $ 1,500-2,000 to mount it onto a lens.
I have a Cooke 20-100 (40-200) T 5 for $ 10,000
I can dig around and see if I have any copies of the video I made ten years ago.
Cheers
Ken