i live in Plainfield, Illinois near Naperville....the rainbird installer came out to give me a demonstration of the products....price was set at $3,880 which comes with the rain sensor, and 1st year free winterization and start-up again in the spring. the hunter installer charged $125 extra for the rain sensor and gave only the winterization free the first year with a price of $3,825 +$125 for the rain sensor