Simple but nice model. My first one took about an hour and a half from print to completion, I think if I did 2 at once I could do that in about 2 hours (work on one while the other dries).
It's a bit fiddly but then models of this size usually are, it is otherwise quite straightforward. You have to build the ends then wrap the middle over them.
My only real criticism is that the last flap you glue is at the top where it is easily visible; this is where any inaccuracies earlier in the build usually show up so that's not really a good place. If you build carefully and accurately it's not too bad though.
In 28mm scale they are about the size of a medium family car and they come in a nice range of colours.
So if you want a few hover cars lying around in your next game of Infinity that aren't too hard to build and you don't want to spend too much (one dollar!) these are for you. I will be getting my dollars worth anyway!