I bought the Vitavia Ida 900. Everything arrived and I chose to put the greenhouse together myself. I consider myself reasonably adept at putting things together. However the instructions are the worst I have ever seen and the pictures in the instructions were quite frankly close to useless. Luckily I had taken a picture of the greenhouse at the shop where I bought it as without that I would have sent the whole package back. Once I had assembled it, then came fitting the glass. Took about an hour to figure out how the clips to hold in the glass worked. Again had to zoom in on the picture I had taken and only broke on piece of glass. If you are not handy, then either don’t bother buying it or pay the extra and have it installed.