That's true, the whole thing looks quite simple, it's just a matter of gathering the components and crimping them together, however I do have two left hands when it comes to electrical stuff, plus I don't really have the tools required (crimper or soldering gun/iron) so I'd feel better if I could find someone to make the kit.
@bigpie - it really is a shame that you are not making them anymore, as I would also buy one for my Glee if I could find it cheaper than easternbeaver.