I think I had $10 in material in that one that I did on my DRZ. I would buy one of the offered mounts, but i like getting my hands dirty and drinking beer... tragic flaw of mine. Not to mention it always gives me a bit more pride in it when I did it. (When it turns out well.)
I didn't want to knock anyone's design, or start a thread to do so. The guys producing them have their time and equipment that they have to pay for, so I dont think $65 for a well packaged kit is way out there. Just see some possible changes I would want to make.
If it doesn't turn out looking like socks on a rooster I will post up some pics when complete. Hope to see some other home made DIY jobs too.