In a nutshell, the cost of building from a kit is not as much more than building a boat from scratch as people think because of the extra plywood required to build from scratch not to mention the time savings.
In the meantime, we are making progress on the first professionally built Goat Island Skiff (yawl version) which will be at the Maine Boatbuilder's Show in Portland on March 18-20th. Please stop by. We'll be in building 2 near the stairs up to food court.
When I post next, I'll have a PDF link that goes into more detail about how the designs/kits are produced in CAD and CNC cutting.