"Being a bit of a space nerd, I've been looking forward to this set since I found out it was coming. My five year old son loves LEGO as well, so I thought it would be fun for him to get involved in the build. Well, with a bit of assistance from me (mainly squeezing bricks for proper fit), he ended up building about 60-70% of it. So yes - the build is not that difficult. At the same time, it's challenging enough to be entertaining and definitely more than just a quick LEGO fix. In addition to being a fun build, it also allows for lots of opportunity for education. He loved learning about different modules, which country contributed what, etc. The finished model is surprisingly accurate, and while it's definitely not a swoosh-it-around toy, it's a great display model. The stand is plenty sturdy and the ability to display the various spacecraft on it (and the custom-printed plaque) were very welcome. Overall - a great set, great value for the price, and highly recommended!"