Neat project, those are great looking ships. I am all in favor of and willing to back Kickstarters for quality, usable, STL files, that's the wave of the future. I have nothing but good wishes for this project.
But.
There's one picture, and it's a rendering, not a photo of a 3D printed model. It's not clear which fighter in the picture is which, so you don't know what you're getting at the various pledge levels. 5 euro is pretty high for a single STL file.
Also, models that look great at one scale often look terrible when you scale them up or down. The KS gives no indication of what size these were intended for, and without photos you really can't judge whether they will look good at the size you want to make them.
Are they compatible with any standard bases? Is there a hole in the bottom? Would it be too much to ask to include an STL file for a base? Seriously, that's five minutes work.
So I wish them great success, but I don't think they're on that road.