In our case, for example, in the Drake Landing solar community, the investment in the home and the upgrades to turn it into an R-2000 home—putting in the specialized solar thermal hot water heating systems and the air handling systems, which is stuff that's not off the shelf in the marketplace—cost in the order of $30,000 to $40,000 a home. I'm not positive of that number, but it's in the order of that amount, and the homeowners paid a percentage of it.
At the end of the day, there has to be market receptivity to moving in that direction. What we've seen is a steady decline in the cost of these innovative, energy-efficient initiatives, and that has helped to increase absorption and demand.