The basic 19" frame is reasonable enough, but the card front panels and some of the other bits are really expensive.
So, several months ago I purchased a 3D printer kit. Historically I've been really unlucky with CNC machines and they have always been more trouble than they are worth. However, I've been wanting a 3D printer for ages and I've been really looking forward to being able to print some custom parts including these PCB mounts for my 19" racks.