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The 8-zone system is $200 today ($50 off): http://www.amazon.com/Rachio-Smart-Enabled-Irrigation-Controller/dp/B00IEFXDIE
The 16-zone system is $240 ($60 off): http://www.amazon.com/Rachio-Smart-Enabled-Irrigation-Controller/dp/B00IEFXDES
And these normally do sell at their full retail price. They get great reviews and so do their mobile apps.
The Rachio IRO is also EPA WaterSense certified, which makes it eligible for rebates in lots of areas. I'll be getting a $100 rebate here in Utah! (I hear there's a $200 rebate in Los Angeles!)