They had but were marketed in a fancy wood box and priced as equivalent to professional craftsman tools. They would have cost me several month's allowance.
I had to use double sized "safety razor blades" for my sitck built models. Fortunately my dad had jeweller's saws with very fine blades. One shortcut I never learned till many years later was to rough cut the formers and sand to shape. This would have saved me a lot of work and time. In every magazine, and even today, one would see a powered tool saw blade following the cut line faithfully and very accurately to impress upon the viewer that the part can be used for assembly right away. I can imagine how many would be hobbyists thought themselves failures when they couldn't achieve this.