Prices have indeed gone up.
Current estimate for a retail buyer is $1200. Slightly cheaper than the factory unit, but not nearly as great a deal. But if the cooling capacity and the durability are both significantly improved, and the fitment isn't a nightmare, I'll be really happy.
I have ordered the prototype unit (will be the second one they've built) and we're going to ensure it fits / etc and then will organize a group buy for anyone interested. Should be a few weeks out.