Wow! Just found this thread. Glad you're getting more business but don't sell your self short. $150-$200 seems reasonable to ME. If you have a lot of time, want to learn and like a challenge, and save money - then have at it. Otherwise, really what other options do you have other than $500 plus.
Hell, I like to do some projects to save money but sometimes its "better" to buy it. Especially, when you have too many projects.
I haven't installed it yet but will try to do it soon. All I know is, time is money, and I would gladly pay allstars (which I did) to make one of these. Now I have more time for higher priority items!
Steve ... I'll contact you when I get ready to install.