There also was Tiny-C for the 8080. Dr Dobbs 1980 for about $40. Same issue as Small C.
http://primepuzzle.com/tiny-c/tinyc-doc.html
Could have been the Personal C Compiler, which was only $20… later $9. It was very impressive and outperformed Microsofts and Borlands in some scenarios.
Possibly, the price in the range I think I paid. But I don’t remember the product name.
Probably MIX C. They also sold a database package and a small co-routine OS.
I used them all in anger in the dim mists of time..
No, I’m sure it wasn’t MIX C.