I am offering this review as constructive criticism.  I purchased the prefab because I loved the idea of a modern looking heli tower. I have a heli event on my server and I have public towers that I build using normal building parts for the players to teleport to when it starts.

When I loaded the prefab into a map and got to look at it first hand I had one primary issue with it.  That is the use of the black cubes and the white cubes to create the walls & floors.  Without any kind of texture it just looks plain and fake.  If you used a better material with texture to it, it would look so much more realistic.  With all that said, I will not be using it in my map.  I won't refund, just consider it support for your work.

Thanks!