I can’t wait for one of these articles to come along and say that someone has something available for purchase now. However, this article claims that by the end of next year they’ll have solar cells 20 times cheaper than today’s:
Over a typical 20-year life span of a solar cell, a single produced watt should cost as little as $0.20, compared with the current $4.
They took an interesting and pragmatic approach: use materials that are less efficient, but dramatically cheaper, than the current state of the art. If I read this right, this means that a 3kW solar system will cost $600 instead of $12,000. Sign me up!