You're buying the following:
One Irritrol RD600-R Sprinkler Control Module with 20 pin connector (The one with the mostly blue label).
It typically ships next day, comes with a 1 year warranty, but if you have trouble after that, just let us know; we're more concerned about customer satisfaction than a warranty period.
Payments may be done through Paypal or Credit Card (via Paypal).
If you have an existing controller that isn't working, consider sending it in for repair instead. Contact us for more details.