SolarEnergy.com sold for 1,650,000 USD in 2008. I believe its the highest price ever paid for a green/alternative energy domain name...so far. However, as I recall, I think some of the business interest was included with the sale.
So someone "paid" $1.6M for SolarEnergy.com and put up a comming-soon page? I would not beleive press releases from over-the-counter "penney" (really UNDER a penny in this case) stock companies. And the guy selling whitehouse.com got several million dollars offers also.