These bunk beds are made of solid wood and are great quality and a good value.  They are actually better than we expected.
The only thing that is not so great is the railing on the staircase... it's kind of wobbly and the  pre-drilled holes didn't match up correctly.  
We have some experience with tools and projects. The set-up time was only 2.5hrs, start to finish, reading directions and doing every step.  The estimated time was 7hrs.
We are happy with this purchase and my kids love their new bed.