Wait until they lower the price..$400 is a bit pricey..but if you can find someone willing to sell all the best of luck to you.
They just sold for ~$330 in the EU site. So that should be the current price point IMO.
Yep, I'd buy some for $300 to $330 if there were any still left.
The new gen h-boards are really nice btw; they hash at 38GH stock.