this kit is sturdier than I expected and nicely constructed. for the price you can not go wrong. my main complaints are that the instructions weren't very good, it was 1 double sided photocopy with tiny black and white pictures and not very good english so it is tough to tell what you are supposed to do. however the kit is not very complicated and I am an amateur builder and I was able to figure it out.
I didn't like what they said to do with the control linkages, basically stick the two sticks (from control horn and servo horn) into a shrinkwrap tube and fill it with glue. in my experience glue doesn't hold on to metal for very long, so I opted to use my own linkages.
when the box showed up there were carbon rods sticking out of the corner, they were bent in a big C to fit in to the box and had poked out the corner. the rods were ok but I was worried they'd fall out or the post office would reject it.