Running your own infrastructure *can* be as little as half the cost of running on AWS once you are at scale. OpenStack-based cloud systems can provide the same or similar economies of scale if you leverage the lessons of AWS and GCE when building your cloud. This talk discusses the economic factors in designing a cost-efficient AWS + OpenStack hybrid cloud. We look at the issues involved in repatriating existing applications, and show a couple of real-world demonstration of tools that can assist in the repatriation process. Repatriation isn quite as simple as hitting the Easy button, but if you plan your deployment correctly, you can make it work, both technically and economically.