This power box cost me about $5 to build....so way less than the $150 summit wants.
It does not have a fuse in the power box itself but there is a fuse just before the power goes into the box. If you wanted you could get one of these fuses
http://www.jtekmachinery.com/p-5468-daito-hp32.aspx
And a solder on fuse holder for circuit boards. Then you could have the fuse inside the box if you really wanted.
Here are the screw terminals
http://www.winford.com/products/stb.php
All you do is just lay down a big bead of solder along each side of the board which ties all the pins on the screw down terminals together. 1 side for ground and one for power. Then just tap power and ground somewhere and supply to the top of each "rail"