I bought this Kay Fuzztone new in about 1984 for about 20 dollars. I now see them going for over 300 dollars. Seems crazy. I have also seen other companies making copies of it. It's a simple circuit with a plastic housing and a rubber bottom cover. Made in Japan. I don't know if this was a re-release or leftovers from the 60's. I will have to find some history on it...