We are a family of 3 (soon to be 4) who love to build with Lego during our free time. We usually buy Lego sets that our son(age 5) picks out for birthdays and other holidays. We generally build a set over the course of a few days or weeks one bag at a time before bed time. This set took the longest for us to complete, but was very enjoyable to build. My son loved the Minifigures and other accessories like the juice stand and cotton candy cart, while my wife and I were blown away with the design of the frame and intricate mechanisms. My son also liked helping me with the gear assemblies, chain drive, and other complicated sections. Most importantly, unlike a few of the sets we've built in the past, this one has had the greatest play value. My son and I have spent hours loading the cars with various themed characters and acting out their trips to the amusement park. Most recently was Sensei Wu and the Ninjas driving the Ultrasonic Raider to the roller coaster for few hundred laps and some cotton candy. :D While the price is rather high, I believe this set is a great value, especially if you or your kids like to play with Lego sets just as much as building them. The only sort of con for me, is that it takes up a lot of space. We've designated a coffee table to it, and it cant really be taken apart into smaller sections for storage. But its size is also what makes it so incredible and fun.