Just to throw a little more confusion into the mix...

A "Short" kit is usually a kit that has, let's say, a fiberglass Fuse, and Foam Wings - but YOU have to provide the wing sheeting, Landing gear, Hardware, etc.

A "Builder's" kit is for someone who is a craftsman. Someone who takes great pleasure in carving and sanding a piece of wood into an exact shape, and who needs little instruction to do so (I.E., Step 1: Build the wing - Step 2: Build the Fuse - etc)