Green Electronics LLC via Newegg offers the RainMachine HD-12 Smart WiFi Irrigation Controller for $219 with free shipping. That's the lowest total price we could find by $31. This EPA WaterSense-certified controller is designed to adjust sprinkler output in up to 11 zones based on a 7-day forecast and includes 802.11n wireless and an ultra-bright touch display.

Also available is the RainMachine Mini-8 Smart WiFi Irrigation Controller for $129 with free shipping. That's the lowest total price we could find by $31. It controls up to eight zones based on the weather forecast and features smartphone integration, 802.11n WiFi, and SimpleTouch controls. Deals end April 23.