There is a bit of assembly required but the two of you should have it together in about an hour.
As I recall to have to install the platforms and ramps on the axle, the fenders and lights, wheels, front pivoting portion, and the diagonal supports.
I did it in my shop by myself but I had the help of an overhead hoist. The dolly is pretty heavy once you start getting it together.
Be sure to request a lift gate delivery if you don't have a fork lift available.
You might want to look around for a used one. They go fast so that's why I ended up buying new. I missed out on 2 because I tried holding out for a better price and they both sold out from under me. That was 4 years ago and they both sold used for over $2k.