How many on this forum that don't understand that not every one in the world who launch rocket are not living in a country where English is the language ? I may felt English, but chalenge me on science, any one, especially rockets , it's a rocketry forum no ?
As for your thin wall, I don't expect them at same price, but they are in my point of view a better investment in long term, so price is not the only criteria. Beside I was looking for a kit with decals, a complete kit that I don’t have to shop left and right, it’s only a low power rocket to have fun in the field near my place. Have you ever build a RC planes from a balsa kit ? You will see that you have to order so many things, sometime you want simple.
I don’t even paint my FB rocket I found they look cool without paint. But a cardboard, you need to fill the spiral, paint it, so why not finish it properly.
So here what I think, 38mm cardboard rockets with decals and paint, I don’t spent more than $ 100
FB thin wall, I’m comfortable to go $ 200 , put Areopack aluminum bulkhead ,,,, all the kit