Where would I find a C8080A chip?

[SnowPunk98]

I know its a really really old CPU if you can even call it that but where would I find any of these like say at a garage sale what kinda computers would they be in?

 

[Jiggz]

I believe they were installed on some Radio Shack made systems of long ago. You'll probably have a better chance of finding one at a flea market.