We just shipped two LO206 engines yesterday, and I'll dyno two more today (or Monday) to be shipped on Monday.
I think we're finally getting caught up on work here in the shop, and yes, it does come at the expense of some weekends.
We don't make a whole lot on our 206 stuff, but then again, it doesn't take the time of building a limited flathead or open either.
I think our prices on our LO206s are pretty fair considering all that you are getting and the time we take to set everything up and tune them.
Our experience and knowledge of them, along with customer service, should be worth something, but that's hard to put a specific value on.
If a guy has the skill set, ability, knowledge, tools, etc to build and tune his own engine, then I highly encourage it, and will help them as much as I can.