looking for some well featured cad software around £100

[jcb121]

So after trying a lot of cad programs like solidworks, Sketchup, Turbocad, Inventor, Autocad and some others

I've come to the conclusion that they're all horribly expensive and would take me at least a few decades of saving just to purchase them.

does anyone have any suggestions?

my budget is around £100 and maybe a bit more if it's really worth it.

it doesn't even have to be the most modern version.

but I'm also looking for software that has ok documentation and quite a following in case I need help or plugins.

it must also export to popular formats such as DXF and STL.

thanks.

while I am a student, I plan on using this software to make hopefully some money in the future so It'd be unethical to get a student version or a naughty version