Not really, it's two metal sides, two doors (you can get any combination of vented or solid w/fan mounts), top and a bottom, 4 casters, and 4 of the corner parts that have the holes for mounting rack rails into them.

Materials-wise they're definitely not worth it. They're marked way up because they only make a limited number and sell them pretty exclusively to data centers and businesses large enough to need their own server racks as opposed to a few server machines here and there.