City of San Diego is offering generous rebates for Smart Irrigation Controllers like Cyber-Rain. All the information relating to guidelines and applying can be found here:
http://www.sandiego.gov/water/conservation/smartcontroller.shtml
Between rebates and water savings, Cyber-Rain can be free!  Some information from the site:
“Costs that are covered by the Smart Controller rebate:
Rebate covers the purchase price of one SWAT approved [...]

Who doesn’t like to save money? And who doesn’t like to save money and do something good for the environment? Many individuals have already reserved their rebate from the Metropolitan Water District of Southern California’s Save a Buck and SoCal Water$mart programs, courtesy of the MWD. The MWD has been offering free rebates to those [...]

The pain of the California drought may soon lessen, thanks to the recent passage of five water bills. Senate Bills 1, 2, 6, 7 and 8 address the three-year statewide drought and ways in which water usage and management can be addressed and improved. The name of the game is infrastructure organization and more conservative [...]

Q:  I don’t know how long I should be watering my lawn. Can Cyber-Rain help?
A:  Good news!  Cyber-Rain not only adjusts watering times with changes in the weather, but can also help you set a water-wise irrigation schedule customized to your yard.  As you are installing Cyber-Rain, the Smart Scheduling Wizard helps you describe each [...]

Great news: water use among Americans as a whole is decreasing! In a new study released by the United States Geological Survey, results show a trend of lowered water use, particularly within the last 30 years. According to the Associated Press, the report explains that “Americans are using less water per person now than they [...]

Q: I would like to be more environmentally conscious and go green, but I also need to watch my expenditures.  Can I save more water and be more green with the Cyber-Rain system? Why should I really consider purchasing a Cyber-Rain system?
A: Before making any major purchase, it is wise to consider all the facts; [...]

The next time you are on Sears.com, look around: you will see the Cyber-Rain XCI system there! The website of the large chain of anchor stores recently began to carry various models of the Cyber-Rain smart sprinkler controller. (Both the 16-zone and the 8-zone controllers may now be purchased through Sears.com or as always, through [...]

Question: Do I need to tell the Cyber-Rain system exactly what to do each day?
Answer: Absolutely not! Once you have installed the software and run the Cyber-Rain Smart Scheduling wizard, your PC only needs to be on once every 24 hours for the Cyber-Rain system to receive real-time weather information. The Cyber-Rain application continues to [...]

Q: Can I run the Cyber-Rain smart sprinkler controller system from my PC?
A: Yes! The Cyber-Rain system will work when hooked up to a computer operating either the Vista or Windows XP operating systems. You will also need to make sure your PC has an unused USB port or powered hub, a working connection to [...]

We know you have questions about the Cyber-Rain smart sprinkler controller system, and we’d love to help answer those. As such, we will be starting a new weekly “Question of the Week,” where we will discuss some frequently raised questions about the system and about general water use. We encourage users to send in questions [...]