Well, considering the the bottlehead kit is $1250 it might be a bit of a stretch to think that you're going to be able to buy or have something built that'll better it for half that. I'm not saying it can't be done, but it seems unlikely.
I think that Fang said something ~$2k w/ the amp. I gave them a brief listen and thought they sounded pretty good. Hard to tell with that much noise but certainly worthy of another listen.
Nick,
Since you can't read that thread, the long and short of it is massive database issues. Doesn't sound like there will be any news until late tomorrow at the absolute earliest.