Yes we do. We charge per sprint, not a flat fee for the total project. Once we've convinced them that our way is faster and cheaper in the long run, they usua

Yes we do. We charge per sprint, not a flat fee for the total project. Once we've convinced them that our way is faster and cheaper in the long run, they usually buy into it. As specially if they've been bitten by flat fee projects in the past, where it becomes an arms race for the developers to do as little as possible, and the client to demand as much as possible. Then tend to then understand that trusting us and working with us is a much better way.