Any contract dispute that would otherwise find it's way to court is appropriate for mediation.
In the time it takes to fully discuss the facts of the dispute with an attorney, you can resolve the matter in mediation. Mediation is successful 95% of the time when the parties agree to participate.
Mediation of contract disputes rarely exceeds one day - with many settled in a half-day. And since the parties split the cost of mediation, the cost savings are significant.